My memory is that it was named "Aero Glass" which heightens the irony of "Liquid Glass" sucking.

But I see many references to it being called just "Aero", but some call it "Aero Glass" [1]

Does anyone know the truth?

[1] https://www.pcmag.com/archive/rip-aero-glass-windows-8-stick...

Microsoft marketing maybhave had a specific preference, but "Aero" and "Aero Glass" are interchangeable. From the same article you linked:

> "Rest in peace, Aero. I liked you, a lot. Still do. And I'll miss you," Thurrott writes