Here you go, you were correct about the indica dominate f1's.
I only remember the two unknown tray part
Sweet Skunk SOL is form Steve.
SS SoL is NL#5 x Haze (m)
x Sweet Pink Grapefruit (f)
here more infos :
Sweet Skunk was originally introduced by Spice of Life Seeds in 1994. The heritage was listed as Sensi Seed’s Big Skunk x Sweet Pink Grapefruit (a.k.a. Grapefruit) at the time, but Breeder Steve later speculated that the father was likely a NL x Haze male rather than a Big Skunk. This makes sense; the Southeast Asian “Hazey” bud structure is hard to ignore. Apparently, Steve had obtained two trays of clones for a grow, one labeled “Big Skunk” and the other “NL x Haze.” Upon planting and flowering the clones, one of the trays turned out to have a male that pollinated the crop, producing the seeds sold as Sweet Skunk. (Sometimes unplanned
hybridization can yield outstanding individuals.) F1 seeds were planted, and an extreme sativa-leaning selection (SS #10) was chosen out of a roomful of indica-
dominant girls. This clone is now known in BC as the original Sweet Skunk clone.