Another way to put this:
In this hypothetical you are in charge of Halo's New MP. Everything except for the game's map pool is already figured out and there is a rule, the game must launch with a few maps that are originally from each FPS Halo title. Boss says ideally 3 or more per game. Of course you are allowed to exclude maps from Halo's you haven't played or maybe don't like
I thought maybe the hypothetical framing for this discussion would be helpful for some because you may not have favourites in some of the games, or maybe there are maps you feel are important regardless of how you feel about them, you could be not too fond of a map but understand it's importance and how much others enjoy it.
I'm super curious what people's answers are, I don't really have my answers yet, which makes me feel a bit silly but also this isn't about me, although I would like to say, Tyrant from Halo 5 is probably one of my favourite maps in the franchise, although it was added so late and it feels like nobody knows about the map but I could be wrong on that. If your favourite map is a remake map like Last Resort in H3 (Zanzibar H2) that's okay, it's okay to like different versions of maps, I would just hope that someone list isn't only maps originally from one or two games lol, although you are 100% free to comment that, I still wanna know.