Thing Plus - RP2040
RP2040 chip designed by Raspberry Pi is also available on boards from Sparkfun.
The Things Plus RP2040 includes an SD card slot, 16MB flash memory, battery connector, addressable LED, JTAG and Qwiic.
The Raspberry Pi foundation provides excellent documentation for programming the RP2040 using either MicroPython or C++.
More information is available on the website of Sparkfun.