Or search: maker, brewer, mercer, singer, shaper, bottler, whitney, armorer, producer, armourer, mccormick, sericulturist
3 Syllables: SUU
aperture, flatterer
4 Syllables: USUU
oracular, spectacular, vernacular
5 Syllables: UUSUU
manufacturers

Found 6 words across 3 groupings. Skipped 3 excess words of a similar stem.