Pinecone[0][1], newer initiative made by former Yggdrasil[2] maker(s).
CJDNS[3].
AIUI CJDNS relies on intermediary high-uptime discoverable router nodes which is what is motivating Pinecone. POKT[4][5] to CJDNS seems like what Filecoin is to IPFS.
I'm yet to get around to doing the groundwork of grokking more established solutions like B.A.T.M.A.N.,how all these pieces relate to each other and what's already possible. In particular what's realistically achievable on top of webRTC.
If you want to go real radical, well, Urbit.
[0]: https://fosdem.org/2022/schedule/event/matrix_p2p_pinecone/
[1]: https://github.com/matrix-org/pinecone
[2]: https://yggdrasil-network.github.io/
[3]: https://github.com/cjdelisle/cjdns/