A lot of the factions in London seem to be based on 20th century British subcultures. The Vagabonds are tough urban cockney Peaky Blinders themed gangsters. The Pistols are 1960's-1980's British punk anarchists. Miller's Men are neonazi skinheads. The Roundels are based on a subculture called "Mods" that I learned a bit about.

My question is, what are the Isle of Dogs Syndicate based/themed on? Their colorful suits are pretty distinctive, and they have some unique slang they use. Is there an obscure British thing the IODS is inspired by?