1 Syllable: S
alms, aud, aught, aunt, awed, Bach, balk, balm, baud, bloc, block, blond, blonde, blot, Bob, bobbed, Bock, bod, bog, bogged, bogs, bom, bomb, bon, bonds, Bonn, bonne, bot, bought, box, Braun, broad, Brock, bronze, brought, Caen, calm, caught, caused, chalk, chop, chopped, chops, Claude, clock, clod, clog, clogged, clogs, clot, cob, Cobb, cock, Cod, cog, com, Comm, Comp, Comte, con, Conde, Cong, Conn, cons, Const, Conte, cop, copse, cot, Cox, crop, cropped, crops, daubed, dawn, Doc, dock, docs, Dodd, dodged, dog, dogged, dogs, dom, don, donned, dons, dont, dot, drawn, drop, dropped, drops, dropt, fawn, flawed, flock, flogged, flop, FOB, fog, fond, font, fop, fought, Fox, fraud, fraught, frock, frog, gaunt, gnawed, God, gone, gong, got, Gott, grog, Hahn, Han, haunt, haut, hawk, hob, Hobbes, hoc, hock, hod, hog, Hogg, hogs, homme, Hon, Hong, hop, hopped, hops, hot, Jacques, job, jog, John, Jon, Jong, jot, Juan, Kahn, Khan, knob, knock, Knopf, knot, Knox, Kong, lat, laud, launch, lawn, Loch, lock, Locke, locks, lodged, log, Lon, long, lop, lopped, lot, mam, Maud, mob, mock, mod, mom, mon, monde, Mons, Mont, mop, mots, Mott, naught, nod, nom, non, not, nought, Oct, odd, on, OP, opt, ought, ox, palm, paused, pawn, plot, pod, pomp, pon, ponds, Pons, Pont, pop, popped, pot, Pott, pox, Prague, prob, Proc, prod, Prom, prompt, prop, propped, props, Psalm, qualms, quam, quod, rob, robbed, robs, rock, rod, rom, Ron, rot, sawed, sawn, Scot, Scott, Scott's, shock, shod, shop, shot, slop, slot, smock, snob, sob, sobbed, sobs, sock, sod, som, Somme, song, sop, sot, sought, spawn, spot, squad, squat, stalk, staunch, stock, stop, stopped, stops, strong, swamp, Swan, swathed, talk, tang, taught, taunt, taut, thawed, thon, thong, thought, throb, throbbed, throbs, throng, tian, Tod, Tom, tongs, top, topped, tops, tot, trod, trot, Vaughan, von, vox, wad, walk, wan, want, Wat, Watt, won, wot, wrong, wrought, yacht, yawn, yon
2 Syllables: SU
baton, cannot, enfant, Islam, Milan, Punjab
2 Syllables: US
3 Syllables: UUS

Found 380 words across 4 groupings. Skipped 113 excess words of a similar stem.