I am very happy with the 8bitdo Pro 2 and the Gulikit King Kong 2 The dpad is a similar diameter but feels more rigid.
For the 8bitdo: The 4 buttons are spaced a bit further, and the buttons have a more prominent corner on them. All of the buttons have a satisfying action and travel. I like that the battery is easily removed.
Only wishlist item would be for hall joysticks.
The Gulikit King Kong 2:
Feels like a very high quality Xbox styled controller. I am wary of the shoulder buttons of Xbox styled controllers but these do feel like a different type of switch internally so maybe it’ll last longer.