Another open-source SFU I've had great experience with is Livekit[0]. Great docs, modern, easy to deploy (it's a golang binary), and supports a number of egress options too if you want to record the media during a stream to an external system. With their cloud product they've also built a really cool 'mesh-based' SFU-CDN that allows peers to connect to an SFU closest to them and have their media broadcast to other SFUs internal to their network, which allows for easy scaling during broadcast-style use-cases.

[0] https://livekit.io/