First, as a fellow former wrestler, I commend you for your hard work in that sport, and I am sorry that it led you down a bad path with an eating disorder. I have some friends (both males and females) who have dealt with ED's and they are no fun. Hopefully your mind is right and you are in a good place now, and best of luck to you moving forwards.
The good news is that you're likely in an excellent position to put on good muscle - at a good age, with a good history of hard work from wrestling. There are many, many roads to success and the truth is that hard work is the common denominator; posts that you see on the forums which haggle over the minutiae are often missing the key point, which is that the original poster is typically not really committing to the process of getting stronger.
Eat a lot of high-quality food. Meat, fruit, vegetables, and whole milk are all good things. Eat them, and eat lots of them. You can do this in a very intuitive way. With a history of eating disorder, I am reluctant to recommend regular weigh-ins because that can become a mindfuck for people with history of ED, so don't feel that you have to constantly weigh yourself. I would start with eating about 2,800 calories per day, all from the aforementioned 4 sources, and adjust up or down depending on how your body is feeling.
The 5/3/1 framework is a great way to get big and strong, but it's not the only way. I would still read up on it and probably run a good strong cycle of the 5/3/1 BBB template, but feel free to read and learn. The truth is that many, many different programs will work, as long as you are committed to the process, consistently get to the gym and put in work, and fill your body with the right fuel to grow. Good luck!