It seems to me that Mbappe may well play as a pure central striker and the center of the field will belong entirely to Vinny, Bellingham, Rodrigo, Valverde +. Vinnie is on the left, Rodrigo is on the right and Bellingham is under the striker (he has already shown that he can do the job of a striker without any problems). It seems to me that Real’s squad is quite flexible/universal and Ancelotti can easily implement the required schemes.
I don't see the team to be the way they are this past season and I feel for who's going to be left out because these guys you mentioned aside from Valverde who I feel can replace Kroos, it is either Rodrygo or no one else. He's the only person I think can't make the first 11. Mbappe's presence will cause some reshuffling in the team with him playing as the number 9, Bellingham and Vinicius Jr playing from both wings while Valverde will play as the distributor, the number 10 of the team but if the manager wants to play without Mbappe for the first time I think the starts will remain the same.