I just shared this a moment ago in another comment, but:

https://github.com/m13253/VxWireguard-Generator

https://gitlab.com/NickCao/RAIT

Both build a set of Wireguard configurations so you can setup a L2 mesh, and then run whatever routing protocol you want on them (Babel, BGP, etc)

(not the OP, but I use these the first one in my own multi-site network mesh between DO, AWS, 2x physical DC, and our office.)