So, I'm preparing for my OMM Comat right now. But, so far, the OnlineMed-Ed OMM videos are fantastic. There are 20 videos total, and it takes me a day to pound through 10 videos in 2-3 hrs. So, I highly recommend the OnlineMed-Ed OMM videos plus Turn Up 2 OMT Anki deck to prepare you guys for the OMM section of the COMLEX-1.
The only things that I will add to the Turn Up 2 OMT Anki deck are probably ME + CS tender points and techniques from your OMM school textbook, and self stretches for psoas, tensor fascia latae/IT band, rectus femoris, adductor, QL, piriformis, hamstring, neck muscles, scalenes, pec minor/major, and latissimus dorsi.
These materials will prepare you well for both the OMM portion on the COMLEX 1, OMM COMAT, OMM portion on COMLEX 2, and probably OMM portion of COMLEX 3. It pays to annotate these key points into an ANKI deck that you could always use for the next 3-4 years.