I think all my bikes fall into this category, but the most mixed up for the sake of utility and cost-effectiveness is my Colner 1x7.
This is the bike I ride around town when I don't need cargo capabilities.
Campagnolo brakes, Shimano 105 RD, Retroshift, Suntour Superbe cranks, sunrace FW, VO wheels.
Now has black Soma Hwy 1 bars and blue cloth tape.