Fog lights would be under parts, not accessories. Unless you're talking about for the modular bumper, which Ford doesn't offer anything for. I'm sure they'll sell the ones on the Raptor eventually. And there are plenty of aftermarket options.
They're both picatinny, kinda. The cheese grater one can use indexed picatinny mounts all across the rail, while the smooth can use them where you see those slots. A non-indexed picatinny mount will work all across either of them.
So... basically looks, yeah. One is slightly more versatile, but...
Height is adjustable. Fore and aft are not on the MGV.
My soft top isn't like that at all.
They are just open holes. Every Bronco has them. The BD and Badlands have additional ones with removable plugs.
I've always had leather seats until the Bronco. Electronically adjustable for at least the last 20 years. The MGV in the Bronco is real comfy. Moreso than the leather IMO. I don't mind the manual adjustment at all. Set it and forget it.
I had to do some wiring under the rubber flooring in my Badlands and it's just the metal tub under there. Can't imagine it's any different than a carpeted one.
Can't have the leather seat electronics right where you'll be hosing out the floor so they add the carpet.