My rule of thumb is anyone that has a name has a community.

• Link Marines
• Thorchads
• XRP Army
• Hive Swarm (which is what I say but no one else does lol)
• Hexicans
• Maxipads (kek)
• Solana Soldiers

Ethereum, Litecoin, and Doge have pretty strong communities as well.
But no banner as far as I'm aware.
There are actually quite a few out there.