MusicTechHelpGuy demonstrates Logic Pro's swing function, which takes straight-quantized notes and pushes every other one to create a groove. The swing slider defaults to 50 (no swing), moves right for a swung feel, and left for reverse swing.
Quantize to a straight grid first, like 16th notes, then apply swing on top. There's no need to pick a triplet or swing setting in the quantize menu itself.
Long notes like bass and chords don't need swing since the effect only shows up on faster rhythmic values like 16ths or 8ths where the offbeat placement is audible.
Swing values around 66-67% line up almost exactly with a 16th-note triplet grid, giving a mechanical, perfect triplet swing. Human players rarely land that precisely, so values in the 60-64 range tend to sound more natural, sitting just ahead of a true triplet feel.