My usecase is a 16 bulb ceiling light in the bedroom. All bulbs on at lowest brightness is too bright for a cozy light, so want to somehow map them to gradually turn on, one by one, before starting to increase their brightness. There’s a HACS integration that does exactly this, but it’s buggy and doesn’t work for that reason.
You can create set of scenes that represenst desired setup of turned on/off lights, input_number with min set to 0 and max set to number of scenes you created and then automation to set scene to one associated with number using chage of input_number value as trigger and combining in scene name some nase with that number (e.g. scene_1, scene_2 and so on). scene_0 would represent all light turned off.