Where you are makes a difference in which ones spawn. For example, there are a lot of Yiga Blademasters in Akkala. Disguised Yiga are always in fixed positions across the map. You get to a point where you can tell immediately. Yiga Footsoldiers are a little more random but you can generally...
Because disguised ones don't reveal themselves unless you talk to them? idk maybe they're very particular about rules. But you can literally walk up to a disguised Yiga and mess with them, swing your sword at them etc, and they literally won't do a single thing about it unless you actually speak...
I actually just ran into a clever trap by the Yiga, a footsoldier appeared ant started attacking a traveler. When I saved them, though, that traveler turned out to be another Yiga footsoldier. Gotta hand it to them, they approach you in so many ways it's almost impressive.
I did Naboris 3rd so it was perfect timing, after dealing with the disguised guys for a while you finally go to their hideout and "confront" them and defeat their boss. Then the second half of the playthrough they're more focused on killing you.
Some tips: there's really nothing you can do...