My main process is salted-paper. I also make platinum/palladium prints, cuprotypes and the occasional cyanotype.
Prints are made in my basement with all of the regular lighting turned on. I have warm LED bulbs installed in the typical ceiling mounted fixtures as well as some under-counter LED fixtures along the bench where I process exposed paper. (I've not experimented with cool LED bulbs). I have no problems with nice clean highlights in any of these processes.
Stay away from windows (sunlight) and fluorescent lights, both of which are rich in UV, and you will be fine.
Safe lighting (red or otherwise) has never been needed for alt process printing. In the days of yore, with incandescent lighting, you wanted to work with dim bulbs (at least that was the lore), but with modern LEDs 'dim' is not necessary; at least in my experience.