Needmoresleep It's interesting that even your list of Tories is slim pickings, consisting of people who you "would not be surprised" if they were GC, and even then, we don't know whether Wakefield is a member of the Tory Party, though it's fair to say she's pro-Tory.
In a similar vein (non-MPs who generally support Labour but we're not quite sure whether they're members) there's Ruth Serwotka, cofounder of Woman's Place, and her husband Mark, the leader of the PCS union, who is said to have rejoined Labour in 2016.