def _get_stat_var_prop(prop_list: list, sv_pv: dict) -> str:
    """Get the value of the first property from the list in the StatVar.

    Args:
      prop_list: order list of properties looked up in the StatVar
      sv_pv: dictionary of StatVar PVs.

    Returns:
      value of the property without the namespace prefix or
      None if none of the properties exist in the statVar.
    """
    for prop in prop_list:
        if prop in sv_pv:
            prop_value = sv_pv[prop]
            if prop_value is not None:
                return prop_value[prop_value.find(':') + 1:]
    return ''