Hi! Around 2016, many U.S. boards (including some nursing boards) accepted PTE Academic and sometimes MET (Michigan English Test) or OET instead of IELTS/TOEFL. You might want to check which of these you took.
You can also find updated info and exam comparisons on gurully.com — it covers PTE, IELTS, Duolingo, and other English proficiency tests. Hope this helps!