Don't know if you are talking about gp off meta builds or any off meta builds in general. An off meta build that I have high success with on Urgot is Black cleaver/ Mortal reminder, ninja tabi /randuins omen, maw of malmortius/ blade of the ruined king. In runes I have 10% scaling cdr, ad , and a little bit of attack speed, to help him aa, and harass better, since his animation is really slow and clunky.
This build allows me to do high dmg, shred tanks and squishies alike, while being just enough tanky to not die as soon as someone farts. I play back like an ad caster and focus down who ever tries to go in, during team fights, but the build truely shines in small skirmishes 2vs 2 /3 vs3.