We'd call that a shake in the US, but not a milkshake. My gut tells me there is a distinction. You can drink a "shake" after the gym, but a milkshake with a burger and fries.
Our milkshakes will have other additives such as malt, vanilla extract, and some sweetener.
I would call it a smoothie, not a shake. To me a shake is a smoothie with ice cream in it.
That's a Fruitmilk
I'd call that a smoothie and still treat it as a dessert. Fruits are pretty sugary and very much an "after a meal and in moderation" thing for me.