The red looks like a Murray Missile style frame with the two bars going into the down tube that started in 58 I believe until maybe mid or late 60's but I'm not exactly sure on that and the last is a Ross.
First bike is Westfield/Columbia, late 50s. Maroon Murray looks like late 60s. The blue one is tricky, has an 80s-90s Huffy crank/chainring, definitely a mutt! And the last bike is Ross/CBC, that frame was their answer to Murray's Spaceliner. -Adam