Was Saturn the Sun in ancient times? Or seen in our ancient skies as a Sun like object?

The Saturn Theory and the Thunderbolts Electric Universe theory suggest that Saturn may have been our first Sun or was at least associated as a Sun. Other EU theory variations may also suggest this.

The Sun and Saturn are two very different celestial objects. Yet the Babylonians appeared to 'confuse' the two... or was it just the translators of the Babylonian texts?

Thompson in his introduction to his collection of astrological reports has noticed that the planet Saturn was also designated as Šamaš, i.e. "sun" by the Babylonian-Assyrian astrologers and he quotes the statement of Hyginus to the effect that Saturn was called "the star of the sun".
Sun and Saturn | Catastrophism

Was Saturn the original Sun?

Was ancient Saturn known as Sol, Kronos, Helios, Quetzalcoatl, Huracan, Atum-Ra etc?

Or should those identities be attributed to another planet, plasma event or the actual Sun in our skies?

And yet the profile of the great "sun" gods presents a fascinating dilemma. During the past century several authorities noticed that Greek and Latin astronomical texts show a mysterious confusion of the "Sun" — Greek Helios, Latin Sol — with the outermost planet, Saturn. Though the designation seems bizarre, the expression "star of Helios" or "star of Sol" was applied to Saturn! Of the Babylonian star-worshippers the chronicler Diodorus writes: "To the one we call Saturn they give a special name, 'Sun-Star.'"

Similarly, the Greek historian Nonnus gives Kronos as the Arab name of the "sun," though Kronos meant only Saturn and no other celestial body. Hyginus, in listing the planets, names first Jupiter, then the planet "of Sol, others say of Saturn." A Greek ostrakon, cited by the eminent classicist, Franz Boll, identifies the Egyptian sun god Ra, not with our sun, but with the planet Saturn. This repeated confusion of the Sun and Saturn seems to make no sense at all. Can you imagine any difficulty in separating the two bodies, or distinguishing the one from the other?

One fact beyond dispute is that the word Helios did become the Greek word for our Sun, just as the Latin Sol gave his name to our Sun. The same can be said for the older Shamash and Ra: the names of these gods became the names for the solar orb. But that's where the connection with our Sun ends and the mystery of Saturn, the Universal Monarch, begins.
Saturn: the Ancient Sun God | David Talbott

Was Saturn a brown dwarf star where planet Earth resided during the Golden Age? Perhaps during the Saturn Polar Configuration?

This would be possible if our Sun and stars are electric.

Or is the Sun we see in our skies the same Sun that has always been there?

As strange as it may seem, early astronomical traditions identify the "primeval sun" as the planet Saturn, the distant planet which the alchemists called the "best sun" and which the Babylonians, the founders of astronomy, identified as the exemplary light of heaven, the "sun"-god Shamash. ("Shamash is the planet Saturn", the astronomical texts say.) In archaic copies of Plato's Timaeus, the word for the planet Saturn is Helios, the "sun" god. Popular Greek traditions identified Saturn as Kronos, alter ego of Helios, and Kronos is said to have ruled "over the pole". But only a handful of scholars have bothered to trace the parallel referents in other cultures, or to address the unanswered questions.
Saturn in Ancient Times | thunderbolts TPOD

The Popol Vuh, lauded as the "Mayan Bible," attests to the same idea. There a previous sun god is described as follows:
"Like a man was the sun when it showed itself…It showed itself when it was born and remained fixed in the sky like a mirror. Certainly it was not the same sun which we see, it is said in their old tales.
The Saturn Myth | Maverick Science

A golden race of mortal men who lived in the time of Kronos when he was reigning in heaven. And they lived like gods without sorrow of heart, remote and free from toil: miserable age rested not on them
Works and Days - Hesiod | The Velikovsky Archive

Peoples that remembered early tragedies enacted in the sky by the heavenly bodies asserted that Jupiter drove Saturn away from its place in the sky. Before Jupiter (Zeus) became the chief god, Saturn (Kronos) occupied the celestial throne. In all ancient religions the dominion passes from Saturn to Jupiter. In Greek mythology, Kronos is presented as the father and Zeus as his son who dethrones him. Kronos devours some of his children. After this act Zeus overpowers his father, puts him in chains, and drives him from his royal station in the sky. In Egyptian folklore or religion the participants of the drama are said to be Osiris-Saturn, brother and husband of Isis-Jupiter.
The Worship of Saturn - In The Beginning | Immanuel Velikovsky

Here is a remarkable fact: though numerous figures of the Universal Monarch are translated conventionally as the "sun" god, the celestial power invoked by the world's first religions is not the body we call [the] sun today. In fact the star-worshippers specifically distinguished it from our Sun by calling it best sun, the primeval sun, the central sun.

Natives of Mexico recall that prior to the present age, an exemplary sun ruled the world, but this was not the sun of today. His name was Quetzalcoatl. The Maya maintained essentially the same idea, calling the primeval sun god Huracan. The Incas of Peru spoke of a former sun superior to the present sun. To the ancient Egyptians, the sun god Atum-Ra, the model ruler, reigned over the fortunate era for a time, then retired from the world. The Sumerian An, ruling with "terrifying splendor," was the central luminary of the sky, but not our sun, and later departed to a more remote domain.

When it comes to the well-known sun gods of early man, nothing in the mythical record seems to have unnerved the experts. As to the original solar character of the Greek Helios, Latin Sol, Assyrian Shamash, or Egyptian Ra, scholars have maintained an unwavering confidence. And surely you can see why: could it really be doubted that Helios, radiating light from his brow, is our sun?
Saturn: the Ancient Sun God | David Talbott

Saturn did not move on its present remote orbit, but ruled as the central sun around which the other heavenly bodies visually revolved.
The Saturn Myth | David Talbott

the words used by ancient civilizations that are interpreted today as “the Sun” – like the Egyptian “Ra”, the Greek “Helios”, and the Roman “Sol” – all originally referred to the gas giant Saturn! Was that planet our primordial parent? Was Saturn until recently a much larger brown dwarf? (The apparent size and color of an electric star is an electrical phenomenon. If Jupiter’s magnetosphere were lit up it would appear the size of the full Moon). Was ancient man around to see it as a sun? If not, why would anyone call a faint yellowish speck in the night sky – the Sun?
Other stars, other worlds, other life? | Holoscience

Chronos was confused with, or perhaps consciously identified with, due to the similarity in name, the Titan Cronus already in antiquity, the identification becoming more widespread during the Renaissance, giving rise to the allegory of "Father Time" wielding the harvesting scythe. He was depicted in Greco-Roman mosaics as a man turning the Zodiac Wheel. Chronos, however, might also be contrasted with the deity Aion as Eternal Time. Chronos is usually portrayed through an old, wise man with a long, grey beard, such as "Father Time".

... In Greek mythology, Chronos in pre-Socratic philosophical works is said to be the personification of time. He emerged from the primordial Chaos. He is often mythologically confused with the Titan Cronus. He was depicted in Greco-Roman mosaics as a man turning the zodiac wheel. Often the figure is named Aeon (Eternal Time), a common alternate name for the god. His name actually means "Time", and is alternatively spelled Khronos (transliteration of the Greek), Chronos, Chronus (Latin version).
Saturn in Mythology | Crystalinks

Saturn was named after the Roman god of agriculture and harvest. While the planet may have gotten its name from its golden color, like a field of wheat, it also had to do with its position in the sky. According to mythology, the god Saturn stole the position of king of the gods from his father Uranus. The throne was then stolen by Jupiter.
Mythology of the Planets | Universe Today

The Cheonjiwang Bonpuri (Chronicles of Cheonjiwang) is a Korean creation myth, traditionally retold by shamans on the small island of Jejudo ... Despite its title, the supreme deity Cheonjiwang, whose name means "King of the Heavens and the Earth", serves mainly as a secondary character ... The protagonists of the myth are instead the two sons of Cheonjiwang, Great Star and Small Star.
Cheonjiwang Bonpuri | Wikipedia

Nova Saturn or Jupiter as the Sun?

Or nova Jupiter as primordial Sun or a 'temporary star'?

Now, even though Velikovsky points out that Saturn was once a much more massive body than it is today, it is hard to imagine that it could have been massive enough to be a star in the context of the thermonuclear theory of stellar energy. If, however, it was an electrically fuelled star, its initial stellar state and its sudden demise seem readily explainable.
Ralph Juergens- Earth as a satellite of Saturn | The Velikovsky Archive

In fact it may well be that both Jupiter and Saturn were at one time minor stars and that their satellite systems were formed as the result of minor or planetary nova outbursts.
C E R Bruce - A New Approach in Astrophysics and Cosmogony | Catastrophism