The TRAPPIST-1 system, discovered 2016-2017, has seven Earth-sized planets around a cool red dwarf. e, f, and g (~0.8-1.0 x Earth) are in the habitable zone—rocky with possible water.
Three chances for oceans in one system—red dwarf sunsets on multiple worlds!
Best multi-planet habitable candidates—JWST is studying their atmospheres now.