I really don't know what's slower - my knitting, or my writing up a post about a long-finished KAL.
The January and February KAL in the Coop Knits Ravelry group was Sidney and Eugene, both from Coop Knits Socks Vol. 2. Serial sockists Mandy and Gail both maintained their reputations for being prolific as they managed pairs in both patterns.
There isn't a KAL running currently, but keep looking here or on the Ravelry group for notice of the next one.