1) Arbor growth 2) Arbor growths 3) Boston and Kenilworth 4) Brown and Cornell, for two 5) Brown and its rivals 6) Brown and others 7) Brown and Yale 8) Brown climbers 9) Brown et al 10) Brown group 11) Brown is one of them 12) Brown Yale etc 13) Brown, Dartmouth, etc 14) Brown, Penn, etc 15) Building climbers Found on https://www.crosswordclues.com/clue/ivies