Yes, they all go on the firestick, I find they are not as good as they were a few years ago, seems the the sources that are scraped are less, and also a good few don't work, but you should find one that works.
Bee tv is my first choice, simply because I don't have to install the player that goes alongside it, I use VLC on bee and it works a treat. Just one tip, if you do end up using Bee, when searching for sources, the best are the ones that say Good LInk, or trusted source, sometimes they don't come up, so just go back and press the episode and it's surprising how many times it eventually finds the decent links.