"Devoted followers" refers to people who are extremely loyal and dedicated to someone or something, often supporting them wholeheartedly and consistently. Full definition
These are the things one must do to prove they are a fully - devoted follower of the way of fishing. (redeeminggod.com)
The best we have is stories recorded by devoted followers who were two or three generations after he died and were clearly motivated by a strong religious bias in their writings. (religion.blogs.cnn.com)
I have kind of fallen off the blogosphere this summer but, I still have been following and still love your recipes and will be a more devoted follower starting now! (eatgood4life.com)