If you can’t find any, the Adafruit’s CAN bus guide states that you can also use Feather STM32F405 Express or Metro ESP32-S2 Express with an external CAN transceiver. The guide has a link at the bottoms of the first page to purchase the CAN Bus Module Transceiver (TJA1050) on Amazon. They are $8.99USD for 5 transceivers.