Hussar
Legend
While I am certainly no cheerleader for Fantasy Grounds, I would point out that FG will do all of this quite well. You certainly are free to ignore the die rolling and automation. But, as far as Line of Sight, lighting and Fog of War, I would say that FG will do that very well.I've used Fantasy Grounds, Foundry, and Owlbear Rodeo; of the three I found Owlbear Rodeo to be the most intuitive, but it's not really what I'm looking for.
Specifically, I'm not looking for something that rolls all the dice for me and knows all the rules. What I really need is a VTT where I can import a map graphic, specify the scale, trace the "walls" (bonus points if the software can figure this out for me), then drop PC tokens on the map with light sources, add other light sources as I desire, and let the VTT calculate Fog of War based on the light sources and walls/doors so I don't have to manually track what the PCs can see, un-fog things myself, etc.
Maybe also help me track PC and monster AC and HP (but don't show the players). Perhaps also spell effect templates (I don't need animations per se). But really, that's about it... something that is really good at Fog of War and super-easy to use for that.
By the same token, if that's all you're looking for, try Maptool. It's a bit long in the tooth, but, it will certainly cover all of that, and for free.