i strongly agree. However, one way a nurse could be eligible for EB1a is if that person has conducted a lot of research. In the US, I often come across nurses at public health conferences, where they are presenting baseline clinical research e.g. reducing risks of nosocomial infections by handwashing adoption . So the scope is there, but as @appleblossom said, the cut off is much higher for eb1a applicants, so OP will have to showcase extensive research, lots of citations, proof of major contribution, and proof of peer reviewer roles(judging roles).