I've been using a 2 tube florescent swing arm office type light (18" tubes) up close. I like the 'soft white' tubes,,just a personal choice. Some like the 'cool white',,
Above the bench (about 3ft above the engraving vise) now are two 4ft double tube 'shop lite' fixtures for added light. One just slightly higher than the other,,I really can't remember why I placed them that way now,,probably for convenience more than anything to do with lighting angles or some special super secret engraving thing.
This for 45yrs of engraving.
Some don't like florescent lite at all.
It's pretty cheap to try out. If you don't like it you can use it as general shop lighting.
No natural light in my engraving cave,,one small window to my left faces north. I do get to look out and watch the birds and squirrels and see the weather change. Keeps you from going goofy.
Don't put too much into the 'natural light ' thing. The sun light is variable and keeps on moving around all day on you,,isn't there at night or in the evening (when I like to work).
It's a quaint thought,,but so is using a bottle filled with water for a magnifier,,and we don't see that being practiced too much any more.
I never liked incandescent light due to the glare and mostly the heat from it. Others do like it,,try it and see.
Never got into LED,,might be OK,,try it.