so many choices is right. (see LITFA in case of emergency)
my non-qualified choice would be all the clovers because they’re nice & innoffensive(except bur clover)…they won’t be annoying if they spread, imo.
the cowpeas/black-eyed peas is one i tried simply because i got bag for a buck at the grocery store…as a no-till cover crop last year.
and finally alfalfa i’ve wanted to try. not so much the vetch but MendoDope seems to have a lot around.
“i’m stoned. i’m outta here…”