Whats with all of these luohan quan styles explain the difference between them?

Question

Northern Shaolin lohan, Da lohan, 18 lohan hands,

Answer 1

Northern Shaolin Luohan is actually Mizong Luohan, a fusion between both, basicaly a Long Fist form of Luohan because Mizong is a subset of Northern Shaolin/Long Fist.... although it is a little less flashy. Da Luohan is a form/set in the Luohan style, basically a taolu. Lastly, 18 Luohan is the complete style, or rather the Shaolin Luohan, there are 18 Luohan and the style is based on the 18 Luohan, It isn't called 18 Luohan that often because it's just a little obvious what you're talking about when you say Luohan.