What schemes support signature aggregation?
I will have to read up on BLS, however, if I understand correctly by implementing the aggregation of $n$-messages, only the signature is aggregated - not the identities, so for an n-of-n multisig use-case it'll require knowing all public keys. I suspect you could make this tradeoff in both systems, but I will not spend the time to verify this conjecture.

The only other signature scheme that I know that supports aggregated signatures is Schnorr using Bellare and Neven. This supports n-of-n aggregated signatures and aggregated identities over a common message.