L to R
Miss Babs except the one mystery yarn; weights are starting weight of yarn ball

Yummy 2 Ply Unearth (96g) used 46g
Neighborhood Fiber Co Studio Sock, hand dyed (84g) used 50g
Yummy 2 Ply Too Sweet (107g) used 47g
Putnam Confetti (97g) used 45g
Yummy 2 Ply Mahi Mahi (103g) used 39g

The mystery yarn could be this!
https://www.ravelry.com/people/parker313/stash/studio-sock-5