There is a saying in Dragon Ball: There are not many colors left for the Saiyans. From the beginning of the original Super Saiyans, to the subsequent Super Two forms, as well as the Super Three and Super Four forms, the evolution of the Saiyans was broken. Because the form of Dragon Ball Super is no longer called in the way of increasing numbers, it is no longer the traditional evolution of the Saiyans. But some authors who like Dragon Ball have produced some fanworks.

So much so that there are various forms after the super four. The first is the Super Saiyan Five Form, which is only mastered by three people, all of which are covered by the Sun family. Because the first person to become Super Five is actually Goku's third son, Zhai Kou. Because Zhai Kou possessed Goku's blood factor and at the same time possessed the bloodline of the Western Realm King God, the starting point was even higher than that of ordinary Saiyans, which could break through to the Super Five Form. The second one is Goku.
When Goku defeated the Super One Star Dragon and finally left with the Dragon, he actually went to the Dragon God Realm to cultivate. In the Dragon God Realm, Goku and Rib Rice practiced together, and eventually Goku integrated the power of the Dragon Ball into his body, so Goku broke through to the Super Five form. The third is Goku's eldest son, Goku. Because Xiaofang was killed by Frieza's son, Goku completely broke out in extreme anger, and broke through to the super five form. This is followed by the Super Saiyan Six form.
Super six is actually similar to the super three form, because six is a multiple of three, so the two will be related in form. It's just that Super Three's hair color is blonde, while Super Six's hair color is gray-black. It's just that Super Six is made up of a combination of Goku and Goku. Because of the resurrection of Sharu, and also broke through to the super god stage, and cooperated with the cells of Frieza and others in the body, Sharu's strength was greatly improved.
There is no way for Goku to merge with Goku, and because Goku was already super five at that time, Goku also broke through to super five, and the strength of the two super five broke through to super six. This is followed by the Super Saiyan Seven, whose hair is red like the Super God's. It's just that this person who looks like Goku is an evil god Goku from other time and space. Goku of Super Four is not an opponent at all, and is teased by the evil god Goku the whole time. So Goku can only change into a new form, which is the Super Saiyan Eight form.
Eight is also a multiple of four, so the super eight form is also similar to the super four, except that the color of the hair and brown hair have become golden. Then there's the Super Saiyan Nine form. Purple hair and dark gray brown hair, the more hair you go back. Finally, there is the Super Saiyan Ten form, which is a qualitative leap for the Saiyans. After looking at the various forms above, everyone will find two details, starting from the form after the super three, you need to have a tail to transform.
Of course, an upstart like Vegeta can also be transformed through technology, and people like Goku who have no money can only break through the limit through continuous cultivation. In addition, the later the super form, the more it will have some characteristics of a gorilla, because the body of the Saiyan is a gorilla. The author of Dragon Ball Super Middle School removed the setting of the tail, so the form of the God Realm was only a change in the color of the hair.
However, dragon ball GT did not remove the tail setting, so Super Four looks like a humanoid version of the gorilla. And there is a detail in the Theatrical Version of Broly, where Broly can't beat Super Race Vegeta at first. But after a few minutes of fighting, Vegeta was suppressed. But when Vegeta became a super god, Broly was no match at all. But Broly did not know why, the combat effectiveness suddenly exploded, and the super god Vegeta was not an opponent.
Eventually Broly's father informs Frieza that broly does not have to turn into a gorilla, but can also use the power of a gorilla. However, the reason why Broly does not have to turn into a gorilla is mainly because of the ancient blood in his body. Like ordinary Saiyans who become gorillas, most of them will lose their minds and need later cultivation to have the ability to distinguish between friends and enemies, while Saiyans with royal bloodlines become gorillas and directly possess 100% sanity.
Then the Saiyans with ancient bloodlines do not have to become gorillas directly. Goku is only a subordinate Saiyan, so he needs to become a gorilla and regain his sanity before he can become a super ten. After watching the above ten super form, I finally knew that the author let Goku give up the way of super competition in order to get to the Dragon Ball super, and chose the god realm to break through, and the feeling was caused by the author's worry about his lack of physical strength.