Slide and push button dimmers at 120V with integrated on/off, supplied as singles and as two packs.
LED compatibility is effectively the whole specification in this category now. A dimmer built for incandescent loads will flicker or buzz on LED lamps and generate a return, so the range is LED rated throughout rather than split between legacy and current stock.
These sell with the lamps as often as with the devices — pair with the dimmable models in LED bulbs, and with wall plates on the device wall. App-controlled versions are in smart dimmers.