Been reading some docs and felt like drawing to get a better picture.

Some things to note:

• Parenthesis indicate bridges
• Fed Bridgy and Mostr appear twice because I don't know if they allow cross-communication
• One-way arrows (→) indicate one-way communication, and two-ways arrows (⇄) indicate the two sides can talk with each other
• Threads to/from Facebook and Instagram communication appears with an interrogation mark because the information I could find didn't feel conclusive and I don't have an account to test myself
• Maybe I missed some bridges and protocols, but that'd be more of a lack of knowing; also intentionally ignored X/Twitter > Nitter > RSS > ActicityPub bridges because it felt too much of a stretch.