I had assumed that using the w5500 PHY would be fairly painless to use within mbed based on its popularity in Arduino circles. That seems to have been a poor assumption. From a couple of hours of research, the w5500 libraries and examples found within the mbed ecosystem have been forked, patched, repatched and abandoned (nothing really after 2015).
Are there other SPI interfaced Ethernet PHYs that are more up to date and easier (just work) with mbed?