Got some numbers but no pics, all the weight talk got me motivated.

The Ross, not sure what model, with some ice and snow on it weighed in at about 35Lbs. A beast complete with bullmoose bars, but should make a fun urban road curb bumper.

Nishiki Bravo, sloping top tube, 14.5" frame, hi-ten steel, 31Lbs.

DiamondBack Outlook, hi-ten steel, 20" frame, minimal slope on the top tube, 32Lbs

GaryFisher Marlin, medium to minimal slope top tube, 16.75" frame, 25Lbs with a full rear rack mounted on it. Feels a lot lighter than it weighs. I really like this bike. Tubing is a cro-mo of some sort, too dark to read the text on the frame.

GT Outpost, 4130 steel, about an 18"-20" frame, 30Lbs.

I couldn't get to the Timberlin which is racked on back and fendered, probably in the 25-30Lb range naked.

Hope this helps some. If I decided to unload most of these I'd keep the Timberlin and the GF Marlin, the rest could go and probably slowly will come sunny weather.

Ps, I'd maybe use one of these in an offroad triathlon but probably not for a legitimate MTB race. But for a weekend brush or trail fun ride then sure if it wasn't too rocky.