LogFAQs > #879938256

let's see. based on the stuff you mentioned:

Six of Crows + Crooked Kingdom, by Leigh Bardugo - Deals with a criminal mastermind and his crew trying to pull off a seemingly impossible heist. Lots of plots and counter-plots and scheming, and also some fantastic team chemistry/dynamics.

The Library at Mount Char, by Scott Hawkins - This might appeal to you if you liked the boarding-school aspect of Harry Potter. It's about a group of children that get taken in by an enigmatic man known only as "Father," who teaches them his magic. The story starts with Father having gone missing, and the children (now adults) trying to find him and trying to figure out what is behind his sudden disappearance.
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another place and time, without a great divide, and we could be flying deadly high