I agree with the consensus that the maps are all good, but there isn't a memorable one out of the bunch. Like Recharge plays great, Aquarius is a good map (except the visual design of that being a weed farm), Bazaar is bloody fantastic Arena map (especially in CTF), and Streets is solid. Two of the three BTB maps are also very good (the one I hate is the AA gun one), but the gametype is broken so I haven't played it in like a month and a half. However, there isn't a High Grounds, Lockout, or Guardian from any of them. The one I am I actually disliking more I play it is Behemoth strictly because there are really open choke centres of the map that you give you a bad time. That and the map is super high vs low ground, which doesn't give a lot of players a chance to a win a duel even if they're at low elevation. I still think every map destroys anything we found in Halo 5 when that game shipped.
I want to see more Foreunner-based maps in the future, too many of the maps that came with the game had zero relevance with the campaign compared to what we saw with the Halo games under Bungie. Like, there is no point whatsoever that the design 343 gave Aquarius has any sort of ties with Zeta or anywhere else relevant in the Halo universe IMHO.