Also sing-box [1]. I don't use it for its primary use case of censorship circumvention, but rather for some highly complex routing configurations it supports.
My use case consists of passing some apps on my Android through interface A (e.g. banking apps through my 5G modem), some apps through US residential proxy (for US banks that don't like me visiting from abroad), and all the rest through VPN. And no root required!
It's wild that GFW triggered creation of this and nothing like it existed / exists.