Alisson is one of the nine players who has featured for Liverpool this season who also played in the 2019-20 campaign.
The others are fellow goalkeeper Caoimhin Kelleher, defenders Trent Alexander-Arnold, Virgil van Dijk, Joe Gomez and Andrew Robertson, midfielders Harvey Elliott and Curtis Jones, and forward Mohamed Salah.
Changes have come with additions such as Ryan Gravenberch, Dominik Szoboszlai and Alexis Mac Allister in midfield, and Luis Diaz, Darwin Nunez and Cody Gakpo in attack.
Dutchman Slot, who joined from Feyenoord in the summer, has also implemented a more measured tactical approach.
“I don’t think it is too similar [to our style under Klopp],” Alisson said.
“A few players still play in the team but we have a little bit [of a] different style, more ball possession. Before it is was really straightforward, a lot of transition, a lot of intensity.”
