Advice appreciated: Am I INTP or INFJ?

Hello everyone!

I hope you're having a great morning afternoon/evening/night.

I read that INFP and INTPs often mistype as each other and I'm curious if I'm a INTP who's been mistyping for an INFP for a while. I've taken many Myers Briggs tests and they all said that I'm INFP, but when I take tests on "how to tell if you INFP or INTP" I get mixed results.

I'm guessing that's because those tests are mainly based on testing how much you value logic, and I love theoretical questions, philosophy, science, and overthinking. It's a bit jarring to read descriptions of INFPs as people who dislike science and organisation (definitely not true for me), but I don't fit the usual description of INTPs either since I try to make everyone happy even if that means hiding what I think the truth is.

I think I've mostly answered my own question. I'm reasonably certain (about 90 percent) that I'm an INFP who has an approach to logic that's typical of INTPs. I could just be an emotional INTP who greatly values making others feel valued however.

Does anyone have advice on how to gain greater clarity? And personality type would you peg me as and why?

Some random facts that I hope will be helpful if you want to accurately type me:

My best subject in school was English, but I also got A's in every single science based subject like Chemistry and Biology. In the fantasy novel I'm writing, I want to create a very detailed conlang that's realistic enough to be a naturally evolved language, make a map complete with tectonic plates, and other assorted sciencey/pedantic-y stuff, but the reason I started writing the novel in the first place was to understand people on a deep level and explore different emotional states and ideas.

Aaaand now I'm uncertain again. Help. At least I know I'm I, N, and P for sure -- it's reassuring to have that certainty.

Thank you for reading all of this. Please enjoy a photo of a sea sheep, an adorable type of nudibranch. (Also you are permitted to enjoy the cute sea sheep even if you did not read all of this and just skimmed straight to the cuteness.)