The hoffmans are great.
The simpsons that swip has seen is DOI, and was sold as such to swip.
Most common active ingredients on blotters are (listed in order of most commonly found by swip): DOB, DOC, DOI, DOM, DON, ALD-52, Bromo-Dragonfly, LSD, 5meo-amt(not so much anymore), LSA alkaloids.
The most common "sandwich style" blotters active ingredients are: 2c-i, 2c-c, 2c-e, 2c-b, 2c-d, 2c-b-fly, aMT, 5-meo-mipt.
the most common "mescal" gell tabs are: 2c-e, 2c-i, tma-2, tma-6, aMT
the most commmon "psyillicibin" gell tabs are: 4-acetoxy-dipt, 4-ho-det, 2c-c
There you have it folks... swip has seen all of the products listed above sold in the blackmarket over the last couple years.