Crystal! What a nice mix of colors you got from the garage sale! As MsDoe noted, that is a great way to get iris that will do well for you.
I second the idea of not just guessing on a name. All of yours look very similar to many, many other cultivars, and too often misidentified iris get passed around. I print pictures and put them on the box for each iris--whether I have a known name or just a NOID (no identification).
Sometimes I will include a brief "name" like: "My mom's blue NOID" (which my mom used to grow). Or "My garage purple dwarf NOID" (which was growing by the garage when I bought my house). But even that could lead some people to think that is the name of the cultivar I suppose. I try to make it clear that the name is not known. Note that some irises are just seedlings that never were introduced.
Approx height and color is helpful. I also print copies of a brief "how to plant and care for iris" for folks to pick up.