So I played new YORICK and he doesn't seem GREAT at anything
He has ok sustain when below 50 percent, average damage and can't really burst down towers due to his ghouls getting 1 hit.
The coolest thing about him is the split push, but aside from that enemy champs seem to always be able to dash out of the ring and 1 hit the ghouls before they cause any real harm.
Outside of laning he feels particularly lackluster. His damage is ok vs tanks, but relatively weak vs squishies for a juggernaut