2015, he won LBL, Fleche and NC, podium on AGR (2nd), Strade (3rd), San Sebastian (3rd), and 4th Lombardia and 5th WC.
Maybe also even in 2014.
Yeah, great year, but nothing compared to Contador winning Giro-Vuelta in 2008, clearly head and shoulders above anyone else in GTs, becoming all the sixth person to ever win all 3 GTs, or beating his own teammate/team, against his DS’s wishes, for his second Tour, or being the third person to win all 3 GTs more than once. He also won the Velo d’Or 4 times. He burned much brighter and faster than Valverde.
Valverde was definitely more versatile and his longevity was insane, but I put Contador above him for the reasons listed. Also, yes, Valverde won 4 Monuments, but they were all the same Monument, and not the most prestigious. (Plus a WCRR, which is more prestigious). Again, very good, but below Contador’s 3-3-3 across GTs. 9 big wins vs 6. 7 vs 6 if you go by the books.
Regardless, Pogacar is miles above them both.