Just if somebody else stumbles upon this thread. I just got clarification from support.
“English International” actually has two differences compared to US-ANSI.
- the right alt key has “alt-gr” as label
- there’s an Euro symbol on the 5-key (this is missing on the picture @junaruga posted, it’s only visible on the whole keyboard assembly)
Everything else is exactly the same as US-ANSI according to support. That’s fine by me so I’ll stick to the “English International” layout 
