Paladin Xs, game 19, a bit more than a month before the end of the game. He was ranked as one of the top kingdoms back then too, but played in another way than he would do later.
Strategy: High population and only cheap military units. A very strong offense based on Dragoons.

Paladin Xs, game 19, still ranked as no.1 right before the end of the last game of SK 1.1.
Strategy: During the last three weeks, he played residenceless with a lot of probes, and trained almost only TF's, Tanks and Scientists from the soldiers which he had saved up the week before going residenceless.

CrYKoL, game 19. another top ranked kingdom before the end, also he residenceless.
Strategy: FTB had 1.5 million soldiers saved up when he went residenceless. He had over 900k probes earlier, but was down to 581k at the end. What makes his kingdom unique was first of all that it was almost only star mines, since he was both residenceless and powerless. Secondly, he never researched Tactical Fighters. This is the only time I am aware about that a residenceless top player at the end of a game hasn't had that.

HolyValleyOfDeath, game 19. NoOneAE was another very good player this game. He played a strategy with tanks only in the first days, then changed to Dragoons and Laser Dragoons a while later, when he had got a higher population. Unlike most other big Forest and Wilderness players, he kept a high population during the entire game, and never went residenceless before the end (even if evil people arsoned 6,7k residences shortly before the stats below were taken).