Mixed! I also love rare/ish breeds so sometimes when I’m getting a chick,chicken or hatching eggs I get odd looks like, You’re buying WHAT for your hooligan flock? Now I have cut down on a lot of my chickens since I’ve moved (hate it here wanna leave as soon as I have the chance) and I have more of an egg laying flock now, but in my prime, I had silkies,frizzles,sizzles, Polish, Sebright bantams, porcelain duccle, Millie fluer duccle, old English game bantams, brabanters, appenzellers. All in the same general pen, there was the occasional big rooster on tiny hen and vise versa, but the little hen in particular that seemed to always be the preferred one, would crouch for him, and if she didn’t want it she would just fly off. I had some crazy looking babies from them.
Though almost all my babies were from the banty hen mentioned above. She was my best layer, hatched her from barnyard mix eggs off
eBay, she’s black with brown on the neck, so most of her babies were somewhat boring but ended up being midsize bigger than her but smaller than the dad.
Now I’m stuck to more standard eggy breeds like RIR, jersey giant, EE, same hornball Banty hen and Speckled Sussex, but I’m getting the freaks at every chance I get!