Every darn one of them. I'm with you, but right now, roadie and speed are my deal. Fat bike? Maybe later.
I feel ya, but I'm thinking about utility and what bikes would cover new ground, rather than cover the same ground a little differently. A fattie would get me out more in the winter and even allow me to hit some MTB trails. The casual bike gets me to the grocery store or nearby social gathering and allows me to wear my Rapha sweaters unironically.