I'm not privy to being a fan, but is Cul de Sac post-rock? I've been to a couple of their gigs at the Tonic in the early 2000s, one was with the Japanese "singer" from the band Can.
Also, Club d'Elf? Just caught their gig, enjoyed it. Post-rock?
Went on the post-rock Wikipedia page to read the description, one of the first bands they mention is Sigur Ros. Played two of their albums from a whole batch available on Amazon Prime. Don't hit me, but this is some of the most boring music I've ever heard.