Currently, 5GHz WiFi is incredibly uncommon in the microcontroller world, unfortunately (forget about 6GHz…). Everything is typically 2.4GHz (WiFi, BLE, Zigbee, Thread, etc.) or 900MHz (LoRa, Z-Wave, etc.). The only 5GHz microcontroller devices I’m aware of are the ESP32-C5, the NORA-W306, and the AW-CU488. Everything else with a radio is likely 2.4GHz or 900MHz. I’m hopeful that we’ll see more 5GHz devices in the future!