The white and green longer ones are fishbone stitch, really practical and not too long or difficult to make.
The long blue blob is a web stitch, I like it a lot, but the thread I used was a nightmare to work with.
The small blue blob is an interlaced backstitch, I wouldn't use it on anything too wide, but also, you need a big enough circumference for the outer backstitching, it may otherwise look bad. Idk, it looks good but has maybe a limited range.
Neat! I love visible mending. Did you use those stitches to cover up holes? Anything behind them like interfacing? The fishbone one reminds me of a fancy hair braid my friend used to do when we were kids.
Yes, there are tears and holes behind the stitches. I didn't back it with anything, just whipped stitched the holes shut and added some extra stitches where I felt it might fray open. This is just a tote bag and usually they aren't filled with much so I'm not too worried. And if it still breaks, well, it's just a tote bag, my friend probably has replacements.
I know those braids ! I never has the patience to finish them but they do look cool.