Most of my component recommendations are in Buyer's Guide.

Nordic nRF52840 product page;

• Seeed Studio XIAO nRF52840
• Seeed Studio XIAO nRF52840

STM32WLEx product page; note that this MCU has an integrated Semtech SX1262.

Meshtastic firmware support is still WIP (booting and functional, but no writeable configuration storage); see [Board]: STM32WL (Seeed Studio Wio-E5) #2539

• Seeed Studio Wio-E5 mini Dev Board

Note: Meshtastic only supports modules with SPI connectivity; UART modules are not supported.

• Product page: EBYTE E22-900M30S
• Features
  • Tx PA: +10 dBm (maximum output power: 30 dBm)
  • Rx LNA: +2 dBm (-150 dBm Rx sens. versus stock -148 dBm)

Note: Transmit power of SX1262 must be configured per the table below to achieve the desired transmit power (data provided by EBYTE by email):

• Product page: EBYTE E22-900M33S
• Features
  • Tx PA: +25 dBm (maximum output power: 33 dBm)
  • Rx LNA: ? dBm (typical receive sensitivity: -135 dBm

Note: Transmit power of SX1262 must be configured per the table below to achieve the desired transmit power (from datasheet page 5):