What Bosses aren't found at all in Traveler Quests?

I've done a few quests here and there in my spare time, but I'm curious as to what bosses specifically don't appear in quests at all.

According to my Monsters section in the Journal, I'm pretty sure these bosses can't be fought more than once:

• General "Princess"
• Pharaoh "Genie"
• Tomato Bros
• "Mischievous Witch" Slime
• "Youngest Fab Fairy" Frog
• Burning "Teammate" Golem
• Magma "Teammate" Slime
• Cerberus
• Dragon
• Dark Lord
• Yeti
• Ice Queen "Kidnapped Friend"
• Hamburger
• "Traveler" Woof-o'-the-Wisp
• Pop-Up Puppet
• Wild Mouse
• "Ex-Dark Lord", Phantom of Evil
• Strong "King" Golem
• Gold General "Princess"
• Pharaoh "Genie" II
• "Fab Fairy"pole
• Red "Youngest Fab Fairy" Frog

I'm not to sure about these ones in particular though because I'm sure I've seen them encountered somewhere before, but my Journal says I've fought them only once:

• Study of "Teammate"
• Alien "Traveler"
• "Traveler" Hammer
• "Traveler's Friend" Frog

Would like some confirmation on this as I think it's an important thing to note on the wiki.