Here’s the algorithm you started with: ModFilter. Yes, I think it can be close to what you’re after, but slightly varied in the sound results. To me, the LOWPASS filter sounds like a 2-pole, with some soft saturation.
The envelope follower is probably built exactly the same as other, similar algorithms, but it “feels” different (with identical settings & the same guitar setup). Holds the filter open a little longer.
I started with that BASS AUTO WAH preset, and tweaked it from there. A little more ‘synthy’ to my ears trhan your example, but not in a bad way. Again, the same kind of ‘tweaking rules’ apply here (as above).
The 2nd ‘bottom row’ controls are optional, but I added a touch of ADSR to this one. It opened up the filter sweep with another layer that wasn’t too obvious.
