I've used Techflex braided nylon cable wraps in the past, and probably will again once I finalize the lengths needed in my setup. They make all kinds of braided, flexible cable wraps, for single cables to multiple cables, and even make a center-split split format I'm linking here that's very quick and easy to insert a bundle of cables into.
They're used by lots of studio and touring pros, and I think Lava cable uses the stuff when they make cable snakes. It's available in lots of colors, if you want to color-code your snakes, or just like color. I usually buy gray or black.
https://www.techflex.com/prod_f6n.asp