Found the name!! These are mosaic blocks, aka Zig Zag Tile Block, Mosaic #4, Mosaic #6

It's hard to see, but they are the same block. I wanted to make these again, so I went hunting for the pattern and couldn't find the name. I finally came across it on this site: https://www.freshlypieced.com/blog/2011/07/summer-sampler-series-mosaic-block.html

It's block #2475 in the Encyclopedia of Pieced Quilt Patterns. I used to have a book with a ton of blocks. It was a simple book, just a picture of a block, its name/s and how to make it. I can't find it now. I know it's here somewhere, so I'll keep looking!!