Or search: borgia, godiva, milady, duchess, peerage, baroness, hamilton, baronage, marquise, marchioness
2 Syllables: SU
beardless, ceaseless, cheerless, clearest, edicts, Felix, freest, greenish, heedless, helix, lyrics, peerless, peevish, penis, Phoenix, pierces, prefix, realist, Regis, Rhenish, secrets, spirits, Swedish, thesis
3 Syllables: USU
extremist, idealist, uncleanness
3 Syllables: UUS
idealists
4 Syllables: UUSU
exegesis

Found 29 words across 4 groupings. Skipped 3 excess words of a similar stem.