Are the Brahmaviharas, Kasinas and recollections also part of Satipatthana?

Hi, the link below is my own understanding of anapanasati and satipatthana. They are a framework for directing contemplation towards body, feeling, mind and finally dealing with all mental phenomena that arise. Brahma vihara, loathsomeness, impermanence, corpse contemplation are themes to fulfill each portion of the training.