Sawano certainly has become an industry staple and deserves credit for that. That sounds are certainly big and epic. But as my dupe account said, for me personally not that memorable, because all big actions spectacles sounds just like that.
I also dig Narutos soundscape a lot. I always love it when traditional instruments are combined with modern sounds. I really like vibing the ost while drawing and stuff. Especially in my teens, I liked to rock to it a lot.
But Cowboy Bebops OST is true art. It's just ear-gasm after ear-gasm. And it supports the scenes and the story perfectly, with seeming out of place art-sy. It's just real perfection. Easy winner here.