Time for a list. These are my eight favourite artists. This list will reveal my bias towards painting and against "conceptual" art.
That is a bias in favour of the art for which art galleries were created, rather than the random things dubbed as "art" just because they are put in an art gallery.
This list also shows my preference for technical skill and interesting use of perspective, light, and colour.
1. Leonardo da Vinci
4. El Greco
6. Wright (of Derby)
8. Bruegel (the Elder)
This list is valid until tomorrow, at least.
Just so you can locate my preferences more generally, I loathe Titian (I once - literally - almost vomited in the National Gallery in response to one), a great deal of the Impressionists, and almost all of the market-scamming of the last two generations.