Also, IMHO LN is the only Layer 2 since you can't go unilaterally to chain with any of those other ones.
Discussion
Yes, as if Today it is. If we put criteria like that only LN is L2. I put is the same bucket Liquid as multisig which is also tied to L1 but of course it is not trustless. Maybe it should be separate category.
Federations definitely have different trust assumptions than LN. I hope we get more Layer 2's. But maybe LN is enough to scale federations and other multi-sig stuff.
Have you seen https://radpool.xyz?
Thanx. I’ll take a look at it.