highly productive plants (like dioscorea bulbifera & sechium edule)

hello friends,
I'm creating an edible forest with (avocados, papayas,bananas,guayabos, tamarillo -tree tomatoe- and Some plants between the trees like tomato,pepper,kiwano, and so

do you know some productive plants (as dioscorea bulbifera-air potato- and sechium edule - chayote-? thanks! living in climate:subtropical low alttitude
osky