There are two current major AVG publishers:
Wadjet Eye Games:
You have played their Blackwell series.
1. The Shivah is short game set in the Blackwell universe. It has an enhanced edition called Kosher Edition.
2. Gemini Rue is an OK sci-fi game.
3. Primordia is a great Post-Apoc AI characters game.
4. Their best? Resonance.
5. Their newest offer is Technobabylon. Cool Cyberpunk setting, not a fan of the pacing, due to its previous aborted episodic nature.
Daedalic Entertainment
It's most close to The Inner World you have played, but better (I'm talking out of ass here because I can't muster up interest to play it).
1. Deponia trilogy: It was their main franchise, but rather low on my list, probably because of the protagonist is an ass, as intended.
2. Edna & Harvey duology: This is their most weird game. It's so cute but you are a mental patient and should be locked up for good. The second one Harvey's New Eyes is definitely worth it.
3. The Dark Eye series: No relation to the Blackguards. Play through Chains of Satinav so you can be blown away by the sequel Memoria, their best offer.
4. Anna's Quest: Their newest offer. It's cute as Edna & Harvey but it's not mental.
5. Honorable Mention: Many folks have problem with the global warming messages in A New Beginning, but personally I like the writing and if you actually play through the game, you'll see that the global warming controversial turn out to be ambiguous. If there is any Aesop in there, it's broken.
(I'm a fan of Jane Jensen. So I like her new games Gray Matter and Moebius: Empire Rising, and even Cognition: An Erica Reed Thriller by association.)
Oh I saw you have a list now. Let me modify your list as well because I'm alone forever:
Botanicula (Kiddie game, don't), Primordia (You like Fallout?) , Resonance, Gemini Rue, Syberia 1 + 2 (I find them GREATLY overrated. You should probably play first one to get a taste of their offer since they are famous last decade), Longest Journey (Don't touch the sequels), + Chains of Satinav + Memoria. Oh, ugh, and I guess I gotta get around to finishing Broken Age P. 2