Slot’s approach is aggressive and intense out of possession, with defenders committed to pressing.
He prioritizes creating chances, drawing similarities to Jurgen Klopp’s current setup at Liverpool.

Man-Management and Youth Trust:
Slot isn’t afraid to trust in youth and demands intensity from his players.
His man-management skills have been widely praised, aligning with Klopp’s philosophy.

High Build-up:
In high build-up, Feyenoord adopts a 1-2-3-5 formation without the goalkeeper between the center-backs. Wingers positioned high and wide pull apart the opposition’s backline, allowing successful attacks through midfield runs. The high backline aids counter-pressing and prevents opponents from recycling possession.

This video says more about his style of play ..

https://gidiwap.com/2024/05/01/what-style-of-football-does-arne-slot-play/

It's quite similar to klop's. The downside of it is that, it's vulnerable to counter attack. Just one pass, and the center backs are in trouble.