I think the majority of the makers of the pedals listed below owe Grygrx some cash for turning me on to them. The rest of your lists have me double over with GAS, but in the meantime:
1. Team Awesome Fuzz Machine: the Clean blend is out of phase on mine, making the control itself basically useless until I get it modded by the maker (really nice guy!), but the fuzz on tap is so bass-heavy anyhow that I don't miss my cleans at all. Only pedal I have that retains as much low end is the-
2. Woolly Mammoth: With passives, it is an ultra-thick one-trick pony, but the pony is made out of iron and granite, and it also wins all the pony shows you take it to out of sheer brilliance.
3. Original Fender Blender: Increases sub-loving lows and can be less "blendering" at lower Sustain settings. The Boost is FAR too loud to find a good balance between it and the non-boosted setting, though, so it's sort of one way or the other. The reissue is like oranges to this apple.
4. Creamy Dreamer: My favorite Big Muff variant, mostly because hardly anyone else has one and it sounds unique amongst the pack. Retains lows beautifully, is more "creamy" than a standard Muff, and has something in the harmonics that in a band setting, allows it to cut by itself, or contribute to the "wall of sound" with another guitar.
5. Pigtronix Disnortion: Jack of Fuzz/Overdrive, master of... paralleling overdrive and fuzz? I got this not too long ago, and though it doesn't have as much character as the Team Awesome, it does have a great sound with many options and retains lows - 100% useful. Plus, parallel fuzz/overdrive is a beautiful sound.
6. Blackstone Appliances Overdrive: My favorite overdrive/distortion so far, and close to my favorite pedal of all; haven't swapped capacitors like Grygrx did yet, but it seems pretty hefty on the lows regardless. Gorgeous drive, and as dynamic as they claim. And it looks as good, to boot. This going into the Team Awesome w/phase-corrected Clean would be heavenly.