I use a “work profile” on my android phone to install another instance of Signal. I registered it with an internet phone number. Not an ideal solution, but does what I need.

Online search? That’s how I first got plugged into some here. Many of them maintain presence on FB, IG etc as a pragmatic matter of outreach, but organize themselves over Signal and offline.

That’s awesome! I’m in a bunch of local Signal groups for my community. I’m about to move away though, and already anticipating a struggle to build the same type of culture where I’m headed.