Are you able to use moves from the Lets Go! partner Pokemon? If so, use Partner Eevee's Bouncy Bubble instead. BP of 90, heals for 50% of damage inflicted, and has similar BP to the other moves. Not sure how Water typing would factor into your team's coverage needs, but it's also good neutral coverage.
Oblivion Wing is a good alternative, but as a Signature Move it may not function on other Pokemon than the one it was designed for (Yveltal). That's a feature of the move itself, so it being in Hackmons wouldn't make it possible. The test is whether or not Smeargle can Sketch it and use it. If it does work, you'll heal 75% of damage dealt, the highest of the "draining" moves.
If those fail, go with Giga Drain. BP of 75 is nothing to sneeze at, and you can't go wrong with Grass typing.
Draining Kiss is kinda not viable on high level Pokemon. It's BP is only 40, which is kind of a joke. It just doesn't hit hard enough, even with a SpAtk focused Pokemon, to be relevant. Ice Shard and Mach Punch only see use due to their Priority.
