Art is subjective. Beauty is in the eye of the beholder.
I love early rpg pen&ink art. It has the feel it is made by normal people who are good at art, not by professional artists. Hiring artists is expensive. Putting creativity in to the hobby to make it better was from the outset an essential part of the hobby. Somehow that has been lost when the industry made everything glossy, when digital art replaced hand-craft with a bland wallpaper of really amazing images which seem invisible, possibly because I have seen so much of it before and am over-saturated with it. The OSR movement discusses 'doing it the old way' without often coming at it from the art angle and how art represents that original rawness verses the modern gloss.
I love the illustrations in WoD, especially Werewolf: the Apocalypse and Vampire: the Masquerade. Again, black and white line art, pen and ink. It has texture. There are several really good artists there. It is Tim Bradstreet whose name I remember the most, the work he did for those books, before he too one the way of glossy colourful digital blandness.
You can see from my profile pic how much an influence these specific things have been on my own art. That picture is an example from the series of an rpg product which I have in the pipeline. Having said that about glossy blandness from digital art, I confess I too use digital art apps rather more than I would like too, and hand-drawn pen&ink less than I should. I work with charcoal also. I'll keep ya'll updated about my goth rpg product as it develops.