I use slip stitch ribbing (also called SLST BLO) to create a fabric that looks like knitting and stretches like knitting. Since they are made side-to-side rather than in the round, stranded colorwork can be done without compromising the stretch of these socks. In order to make these you will need to be comfortable with slip stitch ribbing and using gauge & measurements to calculate stitch counts, as well as basic use of LibreCalc or Excel. I seam using the  Bickford Stitch . I like having a notepad handy to write and draw, as well as using  LibreOffice  LibreCalc (which is free). Google Sheets is not ideal because it doesn't make it easy to resize rows and columns. Excel's horizontal scroll bar is annoying to me, but many people use it for this kind of charting so use it if you like it. These are not perfect instructions, moreso notes on what I happen to do so hopefully other people looking to make similar socks don't have to start from scratch in figuring things out....