I don’t know if this helps and it certainly doesn’t prove ANYTHING, but I have had the following European Plum Trees growing for 2-5 years
Damson (not sure what variety)
Bradleys King (damson)
Green Gage Bevay
I know several of these aren’t suppossed to be good for anything but jelly, and I also know there are several versions of many of them.
my 2 Damson and Kind Bradley Damson are 4 and 5 years old. Last year I got my first 4 fruits set on my Damson but they fell off after about 2 months. They were getting large but certainly weren’t ripe.
Since I haven’t gotten fruit from any of them, and since most of mine aren’t the type of euro you want (sweet), this doesn’t help you much. But I will say all my trees have been healthy the whole time (so far) here in TN.
I got all these from various sources so unfortunately I can’t tell you much more than their name, especially since I haven’t got fruit from any of them.
One thing I can darn sure tell you, at least for me and my location, these Euros grow MUCH MUCH slower than Japanese Plums. They also take more years before first blooms. And when they bloom, they don’t have as many blooms and they are usually only on the oldest growth.
Doubt that helps much but I’m in the south and have some Euro plums so I thought I’d chime in.