Electronics mounts
Uno R3 (and R4 Minima / WiFi) with the official outline, four ⌀3.2 holes, USB and DC jack positions and the stacking headers.
Solid Vibes StandardElectronics mounts
Espressif's reference ESP32 board: 48.26 × 27.94 mm PCB, 2 × 19 pins, module antenna overhanging 6 mm. Has no mounting holes.
Solid Vibes Standard