shouldn't even touch grasp with a 20 foot pole. On Yorick you take warlords because lifesteal synergizes with ghouls giving you several times over the sustain grasp would give even if not fighting champions or you take fervor since that one also synergizes with ghouls as in they stack it for you and gain damage from it again giving several times grasps damage.
EIther is several times better on Yorick then grasp
is better off with TLD or Stormraiders. either amplify the burst in his kit or give him better sticking power, as garen does not make the best use out of grasp since he uses mostly his E to deal damage. though grasp is somewhat ok on him the other 2 are still better.
On
i would either pick colossus or in darius case you can also argue for stormraiders or fervor, though shen can make good use of grasp, toplane tahm might take it too
i would personally opt for TLD as it is really good with his ulti to snipe people altough grasp is pretty savage in lane still though ive used warlords a fair deal as well combined with his heal it gives a ton of sustain so you can just sit under turret and gain gold passively whilst helping team with ult.
could also opt for fervor it seems like a good mastery for him since he has steroids in his kit even Cotc is ok for him i would like both better then grasp
The rest of the champs you mention have little synergy with any keystone and can to some degree make use of grasp but really don't have any other choice besides maybe TLD
The only champions i actually use grasp on are
because most of my builds get to 7k health in a game so it hits like a truck and the heal is good, it's pretty much like a 4 second TLD in his case with additional healing
or tank
since his clone applies it and you pretty much double it's effectiveness which makes it as good as running it on the 7k Sion
On everyone else it's just meh and you take it because you can't really use anything else properly