What are other people's impressions of the difference between the cultural vibe in farcaster vs bluesky vs mastodon vs lens?

(I have my own answers but am very curious what other people's answers are)

Can only speak to my experience:

Farcaster: More signal than noise. Bullish sentiment towards ecosystem of apps that allow for a more customized experience.

Bluesky: Twitter refugees looking for a less toxic twitter experience. Bullish on dev vibe building out AP protocol. Experimenting w/ new container experiences