
There are six branches of Saiyan forms: 1) Super Saiyan God branch, 2) Base Kaioken, 3) Great Ape, 4) Ultimate, 5) Legendary Super Saiyan, 6) Super Saiyan.
Super Saiyan 1 has three additional grades: SS1 Ascended (Vegeta fighting Semi-Perfect Cell), SS1 Ultra (Trunks fighting Perfect Cell), SS1 Full Power (Goku fighting Perfect Cell).
Super Saiyan 2 has three additional grades: SS2 Strengthened (Trunks fighting Zamasu in the future), SS2 Furious (Vegeta screaming 'My Bulma' against Beerus), SSRage (Trunks' new form in the Goku Black Saga).
Super Saiyan 3 has no more grades. It is a flawed form that was believed to be the next evolution after Super Saiyan 2. It pushed out too much power in the wrong way. The Super Saiyan 2 grades are the natural follow-up forms in this branch.
Legendary Super Saiyan was made canon in DBSuper Ep. 93 by Kale. As she did not show any signs of the yellow-haired Super Saiyan forms, I have placed the branch as separate. Given more information it may need to be placed in the yellow-haired branch.
Ultimate is a power-up/transformation, as seen during Gohan's unlocking it in the Buu Saga. It is also seen in DBSuper Ep. 88 when Gohan transforms from SS2 to Ultimate.
Great Ape is a natural transformation that all Saiyans can utilize. Since Golden Great Ape and Super Saiyan 4 are DBGT exclusive, they are not canon.
Base Kaioken is another section added that Goku can have as a state.
Super Saiyan God can be a transformation if six Saiyans put their spirits together. During his battle with Beerus, Goku lost this red-haired form and turned into a yellow-haired Super Saiyan 1. However, this is not an ordinary SS1. It has the power of Super Saiyan God in it, hence my calling it Semi-merged Super Saiyan God. During Beerus' sun ball attack, Goku transforms from the yellow hair into black hair. This is when the power of Super Saiyan God fully merges with him. Hence, Merged Super Saiyan God.
Goku and Vegeta achieve this Merged Super Saiyan God state and then after training with Whis unlock Super Saiyan Blue by transforming into a Super Saiyan as a Merged Super Saiyan God. Goku learns to stack Kaioken on top of Super Saiyan Blue because of its great ki control. This Super Saiyan Blue can also be achieved by transforming into a Super Saiyan while being a Super Saiyan God.
Super Saiyan Rose is a version of Super Saiyan Blue where the body is godly and the user's spirit is godly as well. Since Saiyans are inherently mortal and not godly like Zamasu was, all Saiyans will achieve the Super Saiyan Blue version of this. Super Saiyan Rose was only for Goku Black.
Super Saiyan Blue Completed is a form that I forgot to put in my last submission. It is a DBSuper-manga exclusive, where Goku learns to control ki leaking out of his Super Saiyan Blue form. The anime counterpart to this is Super Saiyan Blue Kaioken. The manga and anime have diverged greatly and that is why two arrows come out from Super Saiyan Blue in different directions. Both are equally canon.




