Try a Lycra covered saddle. Two of my bikes have these. The road bike has an old Terry brand saddle in the Selle Turbo style with Lycra fabric over thin padding. Very comfortable, even wearing jeans.

On the plus side, Lycra over gel or dense foam saddles breathe well and basically work exactly the same way as chamois shorts.

On the minus side, all the sweat gets transferred to the saddle. And they get soggy in rain. I air dry them with a small fan after every ride, and occasionally spray them with Febreze or other fabric cleaners/deodorizers.

I keep waiting for these Lycra saddles to wear out so I can have an excuse to replace them, but the doggone things last forever. One of 'em is scuffed through the fabric on one edge from a crash, but it won't tear or get worse. I'll probably swap the Terry saddle over to my flat bar hybrid, switch the flat bar hybrid's old Bell Lycra saddle over to the comfort hybrid, and get a "proper" road bike saddle for the Centurion. It probably won't be as comfortable.