https://www.classical-music.com/features/artists/20-greatest...
Some personal favourites:
Brahms 4 - Carlos Kleiber / Vienna Philharmonic (https://www.youtube.com/watch?v=Ho-H-8FzbU8)
Mahler 2 - Claudio Abbado / Lucerne (https://www.youtube.com/watch?v=4MPuoOj5TIw)
Shostakovich Symphonies - Bernard Haitink / London Philharmonic / Concertgebouw (https://www.youtube.com/watch?v=YS4dcZ90fN0)
One thing to look out for in baroque is original instruments vs modern instruments performances. Original instruments have a very different - leaner - sound. I find I much prefer them now. Someone like John Eliot Gardiner is amazing in original instruments Bach.