Fallout 2 did have NCR rangers, but they were only ever seen in random encounters.
Fallout 1 didn't even have the NCR yet. The NCR forms from Shady Sands; the first town most players see in the game. Specifically, the faction was started by Tandy, who in FO1 is a teenager you rescue from raiders. It did have Tycho, though; a Desert Ranger you can get as a companion.
Also Wasteland isn't just the inspiration for Fallout. Fargo wanted to make a sequel to Wasteland but no longer owned the rights to it, so they tweaked it into what we know and love.