Any good fully educational high elo support players to watch?

I looked at coach cupcake, corejj and bizzleberry, here are my thoughts;

Videos of coach cupcake is too long, corejj hasn't uploaded a video since last year and bizzleberry doesn't make videos on off meta supports and fundamentals of support(I am biased because I didn't watch any of his videos at first so idk).

I mean, I want sth like perryjg(he ALWAYS emphasizes general rules of the role) but the support version of it and if the player plays off meta supports often, thats better because I am a xin zhao sup main, my old main was rell.

There is stunt but he usually uploads videos of him trying new off meta supports or smurfing(but thats fun so I am not complaining)