I'm using a seat from my 2016 Diamondback pedal bike. The WTBs are too flat for me.
FWIW, IMHO, adjusting to fit your backside bones is the key. Adjust height until your hips do not rock to and fro. Play with backward and forward until the sweet spot is found for your type of riding. Start with the seat set to dead level and then adjust to comfort from there.