I’m concentrating on decorating the top of the sock stitch,
since all such stitches have the (uncommon in Tunisian crochet) elastic stretch.
So, I’ve got Purled Post stitch at the edges
and Chain-top Sock stitch combined with 2YO-top Sock stitch in the middle:
This was made with DK-weight yarn.
Sock yarn (fingerling) looks better, but it’s a pain to do that many stitches.