Are the first two bowfins? The third a crappie ,correct? I've caught a couple that had no pattern except for a solid dorsal stripe.
I have very little in the way of fish pictures, I will try to change that.
First pic is an alligator gar then a bowfin and the last a black crappie with a black stripe down the back. The crappie like these are getting more common now since they seem to breed and pass this color phase along to their offspring.
Sorry I took so long to respond! The old fish forum needs some activity!