I'm not sure whether the developer will see this reply, but I thought I'd post some of my opinions on both the characters and your opinions.
Bishop: I feel like this character would be more fun to play with if the when-lies condition was relaxed or removed. Getting three villagers confirmed is very strong, even at the cost of health.
Medium: Sometimes it can be more powerful when lying, but in some cases it's much more helpful to get a result like "#3 is a real Drunk."
Oracle: I feel like this card would be more balanced if it couldn't indicate itself. It also has some of the same problems as Empress and Bishop.
Wretch: It's a well balanced card, but if the comments are any indication, either it or the cards like Knitter and Scout that detect it need to be made clearer.
Lilis: I find it unintuitive how the characters with targeted abilities refresh every four flips, but only in rounds where characters have night actions. I feel like characters should only refresh if they specifically say they refresh and introduce night on their own, either by writing refreshing into cards like Judge, or removing the refresh on existing cards and making new cards with refresh. I personally don't find the -2 health mechanic bad at all, since it helps make Lilis's ability better in 9-card rounds and interacts with Drunk, Knight, and the health upgrades in the (locked) Deckbuilding mode.
Architect: The detection provided by the Architect could be made to be relative if it checked its own side of the table against the opposite side.
Plague doctor: I agree that it makes the round involve more consideration and logical deduction, but at least for me, consideration and logical deduction is part of the fun of the game.
Jester: You can use this card in the same way you use the Fortune Teller.
Witch: The Witch might be more interesting if it were less likely to appear with Lilis. The Witch in 9-card rounds stops Lilis from making a second attack, and in a 10-card round, it has no use as long as Lilis makes a second kill. The cards don't work well with each other.
Alchemist: The Alchemist isn't too bad, and sometimes you can get information on Evils' location if you kill the Alchemist to validate it. However, it would be better if the Drunk lost the "can't be cured" ability, and it would provide some nice "a-ha moments" as well.
Baker: I think you're underselling the Baker here. The Baker can immediately self-validate if they are the original, and since they only transform Villagers, if you track your flip order, you can sometimes confirm an Evil if they didn't transform properly. If you chain many Bakers, you can tell which ones are Corrupted, and the Evils have a harder time blending in unless they are themselves disguised as Bakers.
Dreamer: This character probably needs a buff, but I wouldn't exactly call it bad when it can reliably self-validate. If you don't use it to find location-restricted Evils like Chancellor or Puppet, then it essentially becomes a slightly weaker Confessor, and since it appears in higher ascensions, it's acceptable to have a difficulty increase like this.
Graverobber (suggested below): You could make a minion like this, but if it would fit the theme better, you could also turn it into an outcast with a balance ability like Plague Doctor's: "While alive, you can't see the true identities of dead characters / whether dead characters are Corrupted / both. ↷, Pick a dead character: Learn their true Role and whether they are Corrupted."
Vampire (suggested): There's nothing wrong with the health mechanic on Lilis. Other than that, it's a good role, but it's a bit game-changing. However, as a Demon, it should really have a name.
If you (the developer) plan to lean further into the health mechanic (judging from the new mechanics for Drunk, Knight, and Lilis), I would suggest a healing role, but with a condition like Slayer so it's not obviously Evil when you don't heal. Something like this:
Medic (Villager, Good): ↷, Pick a character: If that character is alive and not Evil, heal 3 health. (If Lies: do not heal.) [But made less powerful if it refreshes at Night.]