Mamiya C330, Mamiya RB67, RZ67, Rolleiflex SL66 all of them have a built in bellow and therefore can focus pretty close.
with a Mamiya RB67 and extensions I can get much better than 1:1 and can shoot from just an inch or so away.
* Just because your eyes are closed, doesn't mean the lights in the darkroom are off. *
* When the film you put in the camera is worth more than the camera you put the film in... *
* When I started using 8x10, it amazed me how many shots were close to the car. *
I have it now, it's not a rangefinder, it's a roll film view camera. I have a Galvin which takes a roll film back. That's the lightest camera I have. The 6x9 is a good backup too, no electronics, however, I'll need to bring a meter which is no problem. There is no one camera that does it all.
Everytime I find a film or paper that I like, they discontinue it. - Paul Strand - Aperture monograph on Strand
It is not a rangefinder but the Pentax 645 series have some great macro lenses as well as extension tubes, a helical extension tube and even bellows, if that is not enough. I am confused why you want to go with a rangefinder for this type of work?
My Mamiya 645 Pro with the 80mm macro lens focuses very close (36 cm) and gives a half life-size negative or slide.
With the extension tube, it goes down to life-size.
My RB67 with the 140mm macro is similar. It is a lot larger, but the rotating back coupled with a metering chimney finder works really well.
“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”
Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2