changing post visibility

hello, may i ask

private acc, post video to friends only. change visibility options to followers only can this video appear on followers fyp? or only if they go to my profile

additionally

public acc, post video to followers only. change visibility to everyone. can people (not following me) have the video on their fyp? or like earlier only if they go to my profile

im not asking whether they can view or not bc I understand when you change visibility options they can view but can it appear on their fyp?