There is no magic saddle that will be super comfortable for all.
A handlebar setup where you can distribute a decent amount of force to your hands will make the saddle more comfortable.
I believe a (flat) KH Fusion One and a KH T-bar is a good place to start for an out of the box solution. It is very customizable but lacks a bit of stiffness.
If you want to use bicycle saddles you can find some inspiration for how it can be done here Handle saddle cushion ideas