Holy shit you're stupid. I stated that the 2nd list only has two champions which have had it implemented. You just seem hung up on the assumption that i think these champions have this system on them, which I had assumed no one would be stupid enough to think that such a fact wasn't common knowledge to literally everyone who plays the fucking game. I was sadly mistaken apparently.
Two champions of that list have a pseudo ward health system,
the others don't.
Both of which have resulted in an extremely high variance in minion durability.
It would blatantly follow, that if they were to continue this trend of making minions have a ward/pseudo ward health system, you'd continue seeing the same exact problems.
Say that they were to implement it onto
... then you'd have the exact same inconsistency problems.
The ult minions would be unlikely candidates, i listed them because such a system is conceivable, but that kind of ridiculously stupid decision isn't something i would put past riot considering how long they've failed to remove this flawed system for about a year now, on the only two champions it's ever been put onto.