As others have mentioned, I find it odd that almost every board comes from MSI, Gigabyte, and ASRock. The only Asus boards here are for AMD sockets, and the Asus RoG Maximus IX Hero.
What's worse is that the majority of these have false 4-pin fan headers. Some fans and nearly all water pumps are not compatible with these headers. Pumps and fans with magnetic bearings can be damaged by these false headers if a consumer believes that any 4-pin header is PWM capable. Considering how expensive those can get, this isn't exactly a trivial detail.
Asus is the only manufacturer that I've seen consistently implement full 4-pin headers on their boards. If their fan headers are 4-pin, you can count on them being PWM capable.
Is this not considered when determining the value of a board?