TC1 was indeed the Ovechkin style heel
TC3 is Bjugstad’s pattern that he’s used for a while. Big toe curve with a rounded blade.
TC6 will be the P90TM
MC is the P88, MC2 was the PM9 I believe.
MC3 didn’t exist at custom level according to the 2017 order form so it must be a relatively new offering. They offered Kessel Pro as well as Byfuglein, so they may have migrated a pro pattern over to that, but I’m just speculating.