PF Flyer is a White Plymouth Rock
Chickie is either a Buff Orpington or Gold Sex-Link
Mitch Gordon could be a Silver-Penciled Wyandotte
Izzy and Benny look like Black Sex-Links
Fantastic! Thank you for the replies. I looked up those chickens you guessed and I hope you're right. I'll post new pics in a few weeks. Hopefully we can get it figured out. Not that it really matters, but I'm still a little bit obsessed with the new baby chickies!