I know, there are different favorite conductors depending on composers for each of us (as if I had to name one for Mozart, it’s Currentzis, who meanwhile also is one of my favorites for Mahler).
But if you had to chose one who stands out even if he isn’t best for every composer?
For me it’s Celibdache. He has a kind of highest relaxing, quiet, enigmatic energy and tension in my perception, which puts one in a kind of trance to take the work he’s performing seriously. He somehow stands out for me.