I have seven published (finished) games on my Itch page. I would like to add a few (now, and more later) unfinished prototypes, too, to get feedback.  But, I'm not sure how to display them nicely, since there are no "categories" or headers or anything I can use to separate my games.

If I lump them all together, I might get people thinking I only make small/weird/unfinished prototypes, and I would rather get eyes on completed games first/more (although maybe I shouldn't care about this).

How have other people handled this? What can you recommend?

It looks like Collections are a nice way to handle this. But how do I display a game only in a collection? And is that the right way to go?