The Muff patch has been on the neuro Collective for a little while. With any Muff model, we need a big mids scoop and a large treble cut to give it it's renown dark and scooped tone. I called it "GMC Muff & Comp Muff". It's 2 channel Muff that's replicated on both channels. Except that Ch2 has the compressor switched on and Ch1 is compressor-less. The expression is mapped to the "balance" control that blends between either channel. If you aren't using an expression pedal, then you could map one of the controls to Balance for both channels.
I also published "GMC Muff gated Fuzz" patch that is very close to a patch I use on the Aftershock. It's a Muff and a Gated Fuzz that you can morph between. It has some compression applied. It's on a single channel too. the Morph and a bit of treble has been assigned to the Expression, you could easily re-assign this to one of the control knobs. Currently the control knobs are set to stock, so Sustain controls the compressor input Gain.
The RAT patch I'm still working on, it uses the same basic distortion engine as the Muff, but very different compression and EQ settings. I'll probably release two patches, one gated and one compression focussed.