All three of my plants produced seeds. So far I ha...

The smoke wont be quite as potent as it could have been because some energy went into producing seeds rather than buds but I doubt it will even be a noticable difference with only 18 seeds. Looks like you had different strains so they may have cross bred with each other. One plant may have pollinated the others. No way to be sure on that but yes they will be femenized autoflowers. Just possibly crossed strains. But this also means that since at least one went hermie then there is a chance the seeds will go hermie also. So if you run those seeds just keep an eye out for pollen sacs appearing through the grow. I would definitely grow them to see what you come up with!