I’ll stick with the designers that I like because it’s more interesting.
Rosenberg - Reykholt. Flat and shallow. At the Gates of Loyang already exists. Get that one instead.
Knizia - I went through a lot of his games in his name. Loads of them are just absolute shit. Keeping it from his highly rated ones, I didn’t like My City nor its sequel My Island. I swear it wouldn’t be so well regarded if Knizia’s name wasn’t on it.
John Bohrer - one of the best scoring designer by average in my ratings. Southern Rails is bizarre in a good way, but i don’t think it’s a good game.
Splotter duo - another best scoring by average. Roads and Boats was the least impressive, especially after playing Neuland. VOC! scored low too, but at least it was very original and zany.
Lehmann - Favour of the Pharoah. I forgot why I didn’t like it. I left no notes 
Mori - Unusual Suspects. I remember this being “stereotyping: the card game”. I remember that it was reeeaaallly awful.
Chvatil - Codename. Which isn’t even awful. It’s mid at worst. It’s just not the kind of party game I’d pick when we are flooded with these kind of word games. That’s how good this guy is, honestly.
Kramer / Kiesling -
- together: Lords of Worlds. Bargain bin “take-and-make” that exists in a post-Azul world.
- Kramer: Auf Achse. Bad, but you can see the gradual evolution of board gaming from pre-modern period to the German style games of the 90s.
- Kiesling: Vikings. Wait, what’s this game again? Exactly.
Wehrle - rock solid designer. I actually had a hard time choosing which one. But if I have to, I would choose Root. I liked this the least becuase it feels like a game where everyone is playing their own Euro game by themselves, but there’s a strategic layer on top where you can disrupt their own Euro game and slow down their tempo. Cool, but there are more interesting games to play. Even if I can only choose from his ludography.
Amabel Holland - our game of Iberian Gauge developed in a way where the track building turns into auto-pilot. And the game also suffers from an awful turn-order problem. The Trans-Siberian Railroad is the title that executed IG’s “leasing” mechanism better.
Lacerda - One of the better modern Euro designers. CO2 is perhaps the game that highlights well what’s bad about his games (e.g. Left-Right binding).
Matt Eklund - another rock solid. It was playing his games that made me realise that it was him that made some Pax titles great, rather than his father. Pax Porfiriana would be my choice. Not that deep and more tactical than strategic, but still really solid. Well, that or I choose Stationfall. Stationfall is colour in a board gaming world that’s full of blandness.
Carl Chudyk - Another solid designer but Crash! - what the hell is this? Did I miss something when I played this?
Stefan Dorra - Valletta. His take on the modern Euro genre. And it was forgettable even on modern Euro standards.