For me...
I'm not a fan of PVC insulation. One glancing blow from a soldering iron and it's all over.
In a guitar, cloth pushback all the way. Pro tip: I have some little baggies of beeswax pellets...I take a couple of those, roll em onto the cloth at the cut where it starts to fray, and hit it with the heat gun. Keeps everything under control.
Pedals & cloth wire: man, you'd better be doing point to point or tagboard builds, else you're making life hard for like...no reason.
I like using silicone or PTFE for pedals. Silicone is great, super heat resistant, extremely flexible, easy to strip, but the colors are admittedly garbage. It's certainly got a look that I'm not crazy about.
PTFE (Teflon) is much less flexible, but it's similarly heat resistant and looks much more traditional.
Haven't found anything that really checks all my boxes, truth told.