Lot of the Elmore stuff.
Lot of the Dragonlance art.
Lot of the DND art that current modern players aren't exactly too fond of.
So yes, that includes the Cheesecake/Bikini Armors and Jet-black obsidian colored Drow
Pretty much a majority/lot of the DND art from 3.0/3.5 since that was the edition I was starting to seriously get into the hobby when looking up the many details of DND.
Really liked the Dwarven/Gnome art for Dwarven/Gnome characters in 4E.
^As I'll third mention this particular piece too as others have mentioned before. There's a sort of weird "darkness" and desolate feel that encompasses the piece that fits hella well with the whole Fantasy adventure aspect of DND. The foreboding nature present within the dark, grey clouds as you can almost "hear" the sorrowful wails of a cursed undead rising up from the ice in order to make an attempt to claim another victim. Really great touch/feeling all around.
When it comes to the actual art of the dragons themselves, I vastly prefer the 3.0/3.5 art, but as mentioned before, I'm a bit more biased/leaning towards that due to the edition when growing up.
And then when it comes to the 5E generation: the VAST majority of the Alternate art covers of the books. ESPECIALLY the ones done by Hydro 47. Tyranny of Dragons 2019, Icewind Dale: Rime of the Frostmaiden, and the Spelljammers: Adventures in Space Alt set being my top faves.