Grafting

This can be used instead of the Kitchener stitch when you want to graft two pieces of fabric together. You can also do this with a straight piece of fabric folded in half. It has a decorative stitch on the outside and perfectly flat on the inside. Could be used to close the toe of a sock.

https://www.interweave.com/article/knitting/finishing-tip-for-those-who-hate-the-kitchener-stitch/

I like this better than Kitchener when doing a project in garter stitch.