Good that you're in IC and working on all aspects of your life.
I'm not an expert in MLC and can't tell you about stages or help you work through the MLC process that perhaps some others here could, so hopefully they'll chime in.
It's just my take that regardless of whether your H has MLC or not - or what stage he's in - it could takes years for him to come around, so you're better off not spending your energy analyzing it and rather focus fully on your own self/life.
But maybe that's not the right take for you - it's only one person's opinion. Either way, I wish you the best through this difficult journey. Know that others here have gone through it. You're not alone and we're wishing you the best.
Me:39 Ex-W:37 M:7 T: 9 S:6 D:3 BD/IHS/Confirm EA/PA: Feb '20 OM1 affair ends: May '20 W/OM2 & moves out: June-July '20 W files for D: Jul20 OM2 confirmed: 9/2020 Divorced: May '21