It's worth noting that, depending on the specific timeframe you're looking at, the KMT was not a cohesive whole and more of a very mixed bag united front against the Qing + (other) warlords + the Japanese + etc. It's essentially what would have happened if Russia went through the February revolution and never had the follow-up October revolution and somehow the White government had survived past a year or two: a complete mess of ideologically incompatible bickering factions who haven't splintered or backstabbed each other yet.