The only verbs that I have noticed in this tense are ἑστήξω and τεθνήξω. Anything else?
Those are statives, functioning as the future of ἕστηκα and τέθνηκα: “I’ll be dead” rather than “I’ll have died,” so they’re not really to be thought of as future perfect.
In stark contrast with Latin, Greek has little use for the future perfect.