Does Elder Guardians boss count as Final Map Boss?

I was planning to do boss rush with Elder guardians maps and was wondering whether the guardians are counted as Final Map Boss or not?

Mostly because I was unsure if notables like Vivid Memories, Remnant of the Past ,Conquered Conquerors or passives like Atlas Currency Chance, Atlas Scarab Chance or Maven Invitation Drop Chance would work with them.

What also confuse me is the wording on Conquered Conquerors ("Map Bosses") is different than the other notables ("Final Map Bosses"). Does this suggest that Elder Guardians and the bosses summoned by Destructive Play can also drop Conqueror Map?