In a standard Chabad yeshiva, they learn the standard rishonim, S”A, and maharsha type acharonim. More teshuvos and less of the standard acharonim. Not much lomdos besides the Brisker sefarim.
The study of Chassidus replaces Mussar, Machashava, and Chumash sefarim. It’s a much cleaner transition than any other yeshiva. Because it’s the same authors for all these topics.