For some of my profiles I wanted to have something like a Marshall 1960AV or 1960 ASL Slash cabinet (basically the same cab).
But I have no real 4x12 with Celestion Vintage 30 at hand atm.
So I decided to get as close to my vision as possible by using the virtual tools I have and shoot a few IR.
The next close thing to simulate the Marshall 4x12 was in my Two Notes Torpedo C.A.B. / Wall of Sound.
Then I loaded some plugins in the signal chain like Brainworx bx-refinement for harshness control, T-RackS Mic Room for altering / finetuning the Two Notes SM57 mic, IR loader with "Impulse Response of Apogee Mini DAC to Don Classics NV73 pair to Drawmer 1968me to Apogee Ensemble Thunderbolt" from TMS (="mickrich" here in the forum), T-RackS EQ PA for more tone shaping options, Waves C4 used like a filter for further coloring the cab impulse responses...
It's been a while since I shared something here. So maybe you want to try them out just for fun and see if the cabs will work for your profiles too.
You can download the 38 Kemper cab presets for free here:
Amporium - Marshall 4x12 Cab Pack
EDIT 15.07.21:
Added 22 new cab presets; now 38 cabs in the pack