Greetings.
I have several options for status to request a match with Emerald Club: AA PRO, Marriott Titanium, Hertz 5-Star, IHG Gold.
With a bit of Google-searching it seems either of the first two (AA or Marriott) would net the best result:
Status Matcher - National Emerald Club
Middle Age Miles blog on Hertz and National status match
All the same, would very much appreciate advice/experience from forum members.
Thank you!
PS - I'm not affiliated with either of the sites linked above; they're what I found in a Google search of this topic.