The "Ukrainian" portion was related to "ex-Soviet Union" I mentioned there (cough) ;-) No need to be so academic here lol
With Eurasian union I thought that Ukraine basically killed it and since then Kazakhstan is trying to get rid of cyrilic and Lukashenko is all in to be either the Russian boss and Putin successor or moving Belarus towards EU, so the original Eurasian union idea is toast. At least from my outsider perspective (never visited any ex-Soviet Union countries, just knew some people from there, both pro and anti-western ones).
If so then you made another mistake :-) as Ukraine is not a member state of the European Union.
[EEU vs WEU] You could see it sometimes abbreviated that way."
Please don't read my comment as aggressive but I have NEVER seen such abbreviated form.
"Eurasian union (I thought that one was largely defunct anyway?)"
This entity is very much alive and kicking (usually as much as Vladimir Putin wants it to be). The EEU presidency is held throughout 2019 by Armenia.