Notre Dame has said that they don’t recalculate GPAs (because it is confusing, as you can tell) so they put a lot of emphasis on class rank. They want to know how competitive you are compared to everyone else. For REA they normally only accept the top 1-2% people, I’m not sure about RD. Your ACT score is good, don’t get me wrong, but it is on the lower end of the spectrum and Notre Dame puts a lot of emphasis on test scores (trust me, I hate that)
Your ECs look good except that you don’t have a lot of leadership positions listed, so I would make sure your activities detail what you specifically did to advance each activity. Also, parents are the only thing that technically count as legacy advantage. Make your supplements really good and I hope that you would have a good chance!! I just applied REA so I don’t actually have any more knowledge than the facts I’ve learned from reading the posts on this website. Good luck!