Can we be friends?
Finding fellowships in your area of interest is only the start. You need to make sure if there is a real meeting of minds and interests and whether you have a like chance of meeting their requirements.
Check their list of requirements for your top 3 and list them here.
Are there any overlaps in requirements?
Check deadlines for applications and starting dates and duration of fellowships.
Do these match your goals and skills?
Are there ways of getting involved even if you do not win a fellowship?