The question.
Like the title say, is there a way to blacklist certain neutral entities from becoming auto-aggressive when wearing the Ring?
I mainly have in mind Guard from Guard Villagers (naturally spawned and player-promoted) and maybe some Golem from ExtraGolem (when spawned naturally in village, player created one are always passive), but could be useful for packMaker in general who might want control to manage mod interaction.

There isn't a way yet, but it is planned and will be there soon.