from typing import List


def get_gate_names_1qubit() -> List[str]:
    """Return the list of valid gate names of 1-qubit gates."""
    names = []
    names.append("x90")
    names.append("x180")
    names.append("x")
    names.append("y90")
    names.append("y180")
    names.append("y")
    names.append("z90")
    names.append("z180")
    names.append("z")
    names.append("phase")
    names.append("phase_daggered")
    names.append("piover8")
    names.append("piover8_daggered")
    names.append("hadamard")

    return names