Oh man, i've been down the rabbit hole on a related subject the past two weeks.
I'm gonna recommend you filter your choices based on what you can easily run coreboot on, preferably the boards that Skulls supports.
Take 10 minutes youtubing Intel Management Engine and you might agree with my choice of "first filter", if you dont already know about IME.
Lmk if I can help in any way should you jump down this rabbit hole 😁