I went to the main South lounge and then the satellite lounge (which I'd strongly recommend over the main one as it's much quieter and spacious inside.) I handed them my Gold card and BA boarding pass.
They had to indeed consult the book after checking
"Are they oneworld?"
"Nope"
"I think they're Star Alliance?"
"Nope"
"Alaskan Airlines... I didn't know we flew there."
"They're one of your partners. They're a Seattle airline"
"Why are they called Alaska then?"
"No idea"
"I'll be, they've even got one of the eskimos. Well right you are. C'mon in."