Borderlands The Handsome Collection (which I bought about a month before BL3 was officially announced) and Sonic Mania are going to be the PS+ Free games for next month... solid choices
Overcooked is really great if you have people to play it with, but yeah those are some choice titles for next month. I've got all the BL games on PC already so I probably won't play The Handsome Collection, but I've heard nothing but good things about Sonic Mania.