For a group that has been hyped and mentioned for years (iirc since 2018), Oda doesn't really care about the scabbards.
At the end of the day, aside from Kinemon who is portrayed to be more important than the rest, the other scabbards are being treated as NPC A, NPC B, NPC C, and so on. Irrelevant characters. Treated as more or less having same powerlevel during the Raid and Rooftop (contrary to Ashura, Kawamatsu, Denjiro hype in act 1).
Compare them to Gotei 13, the scabbards look like bunch of background NPCs doing background activities.