The transformation of the Super Saiyan came to Dragon Ball to completely change the power levels. The first to execute it is Goku, in his brutal fight against Frieza. And although at that moment the thing seemed unattainable, we did not know that this was just the beginning.
As the arcs progressed, warriors like Vegeta and Gohan achieved transformation, and in the case of Goku’s son, it reached truly amazing levels like Super Saiyan 2.
However, with the arrival of the Majin Buu bow, and the presence of Goten and Trunks, the question of yellow hair was already a common mode that anyone with Saiyan blood in their veins could reach.
Dragon Ball GT and Super uncovered another vessel with the additions of Super Saiyan 4 in the case of the series from the late 90s and that of God and Blue, due to the return of the manga more recently.
New Super Saiyan transformations
It is not part of the canon, but it is official, since according to what you review Alpha Beta Playthe transformations appear in the Dragon Ball Super card game, a certified product of the franchise.
The aforementioned portal publishes that the new transformations correspond to warriors who had never reached this level.
Such is the case of Nappa and Raditz with Super Saiyan 3; Trunks with God and SSJ3; Gohan with Super Saiyajin 4 and Bardock as an SSJ. Enjoy the images of these letters, which you can find out more about at this link on the official page.