Bluesky’s development has been pretty democratic, moreso than Mastodon where one guy basically leads the entire trajectory of the fediverse (at least from a mainstream perspective) from what I heard.
As for Jack, hasn’t been on Bluesky for a while now - he prefers Nostr. Even though he’s on the board, he’s not attended any meetings nor has he dictated how the platform should go. He just threw money at it and ran after the community didn’t take him seriously.
Jay Graber is the CEO, dunno about the investors but I don’t care tbh. If Bluesky does go to shit, the protocol lets me move away without losing my data.