Great finds! What's the condition of the white letter tires? They could be worth what you paid.
Like Highwheeler I think that's a Gremlin on the left. On the right I can't read the the sticker or headbadge. But that's essentially a "Rail" frame. It's the single speed version unless you see a hole on the right side of that rear axle for a possible 3 speed?
Good finds. If you are flipping them, and aren't crazy on the price, I think you could move them quick. I'd post them on the MuscleBikeAmerica forum to get expert analysis on what they are. And higher resolution pictures would help identify.