Red, Curio - 1.25 mm hook
Purple, old, unpleasant to work with - 1.5 mm hook
Gold, Scheepjes Sweet Treat - 1.75 hook
Green, Scheepjes Sweet Treat - 2 mm hook

I like making this so I decided to do a test to see how it works up with different sizes of hooks.

Results:
Red, Curio -- it’s a pleasure to work with, soft and drapey so maybe not best choice for all projects.
Purple -- I think it’s probably KnitCroSheen but I’m not sure, it’s very old. Stiff, even kinky, sometimes annoying and difficult to work with.
Gold and Green -- Scheepjes Sugar Rush/Sweet Treat. Lovely to work with and comes in 87 wonderful colors.