One alternative with both 2.4/5GHz wifi+BLE is the RTL8720DN. More here: https://www.cnx-software.com/2020/01/17/realtek-rtl8720dn-du...
Until recently, the only devkit you could find was the Seeedstudio Wio Terminal. Just came across a devboard on AliExpress for < $6. Looks interesting.