A Raspberry Pi 4 with 16GB? It's been done, but there's a big catch | TechRadar
Raspberry Pi 3A+ Official Starter Kit with Pi 3 Model A Plus Boards; 16GB Micro SD Card, USB Mouse, USB Keyboard, Power - Micro Center
Amazon.com: Orange Pi 5 16GB Rockchip RK3588S 8 Core 64 Bit Single Board Computer, 2.4GHz Frequency Open Source Development Board Mini PC Desktop Run Orange Pi OS,Android12,Debian11 (Pi 5 16GB+5V4A TypeC Supply) :
Radxa Rock Pi 5 Model B 16GB SoC ARM Mini Linux/ Android/ Windows Single Board Computer for Robotics - DFRobot