As far as I know, there's only one dubbed scene so far. The scene with Pierrot on top of you in bed. But if you can hear his voice in that scene, check if the audio is turned down in the game's Options.
ticket taker has the voice line in the DO NOT SPEAK part after you rush out of the tent, no matter if it’s Pierrot or Harlequins tent. Doctor has the one singular Russian line near the end of the cyan tent, I think jesters line is also near the end of his show, harlequins line is when Pierrot comes to your home and you ask him to give you some space then harelquin shows up and does his voice line