I’m going to go with this as well, which likely required an ED app. I hope you cleared with your coach to use non-academic LoRs in your application, because well, that is not what Columbia wants.
Columbia requires two teacher recommendations. These recommendations must come from teachers who taught you in academic disciplines. For applicants to Columbia Engineering, one of the teacher recommendations must come from a math or science teacher.
https://undergrad.admissions.columbia.edu/apply/firstyear
If Columbia doesn’t work out, or we are misunderstanding your post, please get two core teacher LoRs for the rest of your apps (electives and coaches won’t fulfill the criteria at many schools.)