I'm with you! I actually DO need a roo.I'm also seeing pullets, even on blown up pics. The first pic the barred bird may be a male, but at 4 months I'd expect a lot more comb.
Single EE is 100% pullet
next shot-- no roosters apparent
4th pic--lighter Rock may be a male, hard to tell from the pic
5th pic--- cockerel front and center, others pullets.
But hey, if you're still convinced they're all males, simply box them up and send them to me. I'll take them off your hands