Skinny OR sub category...gravel bikes, cyclocross bikes...
Old Schwinn Varsity style bikes that came with 27 x 1 1/4 wheel / tire combos and old Trek Multi-track 700, 800, 900 models from the '90s both make great conversion options using more modern 700c hoops and current knobby 700 x 32, 35, 38, 40c tires make awesome all-terrain skinny bikes!
Here's my 1994 Trek 730 Multi-track conversion I did about 3 years ago in Arizona. Picked up a really cheap Nishiki road bike from that same era, and robbed the Shimano 105 8 speed drivetrain and braking / shifting components and mixed it with the Trek. My go to ride in AZ!
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