zed makes a reliable split pusher because of his ability to kill the other person who wants to follow up on him and ability to escape for a situation.
Wukong is fine on turret pushing use his e on minions for attack speed buff and he has auto attack reset he is perfectly fine.
Talon as you said is with the escape.
renekton is more of a split pusher in the fact that he is able to duel most people and get away clean (only if you play him a lot like me)
Shyvana is a great split pusher due to her auto reset on q being able to proc on turrets (i'm talking shyv jg btw)
udyr is bad overall but is a fine split pusher if he comes back.
j4 is kinda both is able to split push but prefers to team fight.
rest of what you said i agree with