If you’re looking at those Mavics etc then imo it just makes a ton more sense to get lightbicycle rims or even nice alu rims on a good quality hub with proper spokes, for less. If you’ve absolutely got to tie yourself into proprietary bullshit then Mavic are probably the only company you should dream of doing it with but even so.
Re the Crossmax Enduro, specifically, it’s a bloody stupid design with the rear rim flimsier than the front, there’s no other manufacturer that’s ever thought that makes sense. Which is why a bunch of their sponsored riders are going around on different rear wheels, faked up to look the same as what they’re selling to punters.? Pretty crappy on all fronts.
If I had your budget, Lightbicycle carbon on DT240S- lighter, stronger and more reliable than anything on your list and cheaper than some