Thanks so much for the tip. I looked at it but it's all folded on the mobile view and I totally missed it. However, the beluga xl article holds no information regarding this that I can see.
Other than other vehicles and containers, this is pretty cool:
> In 1999, a Beluga carried a large painting, Liberty Leading the People by Eugène Delacroix,[20] which had hung in the Louvre in Paris since 1874
> I'm curious if Airbus ever lease them out to others for transporting big things other than wings.
There are multiple airlines specialising in that business, like Antonov Airlines, who use huge An-225(largest plane in the world by most metrics) and An-124(second or third largest by most metrics) for outsized cargo.