The first is a straight-forward, brand-name 1967 Schwinn ladies' single-speed with coaster brake. There is no model identification, but I'm guessing from frame style, chain ring, and chrome fenders that this is a "Breeze." Corrections from people better-versed in Schwinn anatomy are happily accepted.
The second and third bikes are undated his and hers Schwinn-made B.F. Goodrich bicycles, which were sold in that company's tire stores. Both have single-speed coaster hubs.
Apparently, prior to the 1950s, Schwinn branded their bicycles under different names to cater to big chain stores, but then dropped the practice, except in B.F. Goodrich stores. Other than that, there's not a lot of information that I could find on the Interwebs about these bikes, so dating is hard, but I'm taking a wild guess (based mainly on frame style, decals and motifs, etc.) and saying maybe 1960s. If anyone has better information, please pass it along.
I love the clean, simple lines of all three bikes, due in large part to the lack of brake levers, cables, and calipers. I know they fell out of fashion for a few decades, but coaster brakes are coming back, baby! And I, for one, think they're pretty neat. Some might disagree.