$10 microcontroller with USB-C, BLE and lipo! : r/ErgoMechKeyboards
Amazon.com: BIT-C Pro Micro MCU con cargador de arranque USB-C y DFU (ATmega32U4, 5V/16MHz) (negro) : Electrónica
Microcontroller fits in a USB Type-C connector
TinyPICO ESP32 Development Board with USB-C : ID 5028 : $21.95 : Adafruit Industries, Unique & fun DIY electronics and kits
USB-C Programmable Power Supply For Any Project | Hackaday
Pro Micro USB-C Controller (Black/Blue/Purple) - 42. Keebs
Elite-C V4 - USB-C Pro Micro Replacement ATmega32u4 – Keebio
IBest RP2040-Zero Mini Development Board with with Pre-Soldered Header Based on Raspberry Pi Microcontroller RP2040,High-Performance Pico-Like MCU Board,Low-Cost, USB-C Connector : Amazon.es: Informática