On my main Board I have a RC boost, then a Nordland ODR-C (an ODR-type with more tweakability) and a Kasleder Mean Bone, which is basically a rat as main gain stages. That's really a lot of different shades of gain that work into a lot of different amps.
To top it off I have an OKKO Holy Grit in first position, which is a transistor preamp//boost/low gain fuzz pedal with a great EQ control and a bias switch. I love it for slide tones.
That's four gain pedals that even stack nicely with each other, although I don't stack that often.
Took a lot of trial and error, but I'm quite happy with my board in this regard.