Or search: howe, otis, watt, heron, maxim, morse, tesla, edison, finder, mauser, singer, sperry, wright, creator, eastman
2 Syllables: SU
buckler, jugglers, smugglers, subtler
3 Syllables: SUU
customer, governor, muscular, Rutherford, Southerner, sufferer
4 Syllables: USUU
discoverers, stenographer

Found 12 words across 3 groupings. Skipped 5 excess words of a similar stem.