I looked around a bit, and while I couldn’t find a drawn flowchart for the EU, r/EUpersonalfinance has a page on their wiki inspired by(links to it too) the US flowchart and accompanying text. I hate to plug reddit as well, but here is the link.
(I’m not near a desktop, so can’t really copy and paste the info here with functional hyperlinks.)
As someone who used sync on reddit for many years, I switched to Summit a few weeks ago and it’s great. This post comparing a lot of lemmy apps made me finally take the plunge: https://lemmy.world/post/18159531