What kind of hat? If you're looking for a skullcap, I have the Gatehouse RXC1 with a removable lining. (And a spare lining from one that nobly sacrificed itself to save my head.)
I probably prefer a formed hat. My current one is a skullcap, It feels enormous on my head, especially when you add the cover. But to Ben honest, the washability is a higher priority now, so I’d definitely consider a skullcap if you can wash the lining.