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.
Ragna Crimson has a mid start but it quickly becomes very good with its warfare stuff. I absolutely love how big battles are handled in the series with so many sides playing roles and all.
The animation is very wonky though so I would recommend reading the manga after the episode.