For me it's Mashle, the Apothecary Diaries and Frieren as top Peaks.
Ragna Crimson is the hypest battle anime airing right now. The fights are way more peak than anything Solo Leveling will have until the Ants arc.
Classroom of the Elite Season 3 is my guilty pleasure. I just love the bullshit in this one.
The only one I'm up to speed with is Frieren so it wins by default but man did it jump off a cliff after the first arc. Give me more bittersweet reminiscing over missed opportunities in the past and less "Frieren fires her lazor", PLEASE.
Also everyone should watch the first two eps of Bang Brave Bang Bravern, though I can't vouch for the quality of the series overall.