This doc is good, the actual series is amazing, but more importantly here's my ranking of The Seven Clans of Gelfing.
7. The Spriton Clan
Nothing to see here, barely in the show and they love the Skeksis.
6. The Drenchen Clan
Cool style and location living in the swamp but they seem to just be another take on the Stonewood.
5. The Vapra Clan
Being the higher clan, both literally and figuratively, you love to hate the Vapra.