I run Linux Mint Debian Edition on my 2014 Mac Mini and it’s works really well. Should be the same on the MacBook. Or regular Mint.
I’ve run Mint on my 2015 MacBook Pro and it worked very well.
Either way I recommend a slow release distro because if you use a rolling distro the WiFi will stop working with every kernel update … It takes a few days before they update the Broadcom reverse driver to work with the newer kernel.
That’s why I’m on Linux Mint Debian Edition - I don’t need the latest kernel nor my WiFi breaking every other week. Linux Mint Debian Edition is stable and just works.