Arduino Nano Every With Headers [ABX00033] - Compact Atmega4809 Microcontroller With Micro USB, 20 Digital I/O, 6 Analog Inputs, And Easy Prototyping

Arduino Mega 2560 REV3 [A000067] - Atmega2560, 16Mhz, 54 Digital I/O, 16 Analog Inputs, 256KB Flash, USB, Compatible With Arduino IDE For Advanced

Arduino Nano 33 Iot [ABX00032] - Compact Wifi & Bluetooth Microcontroller With Secure Iot Connectivity & Built-In Sensors

Arduino Leonardo Without Headers (A000052)