If one invests time in an lengthy animated series in which he appears. The character ought to be able to stand alone without benefit of watching TCW.
You keep bringing up the show for no reason. Pretty much everything contextual we learn about him comes from one movie. And it’s more than we get with Snoke.
Plus he’s not even played by Lee in that show and he’s still fun to watch, so there goes that.
What did we learn about him in AOTC other than he was Qui-Gon’s master, left the Jedi for some reason, and now henches for Sidious? Even Lucas can’t seem to decide if he’s totally evil at times.