What weapon do you guys enjoy seeing the most as coop teammates?

Used to play monhun with my friends as a hunting horn main. Recently got Wilds before my mates and wanted to dip my feet in random lobbies. Currently choosing which weapon (leaning on HH or Lance to main for endgame content and have a few questions for those who have been in endgame for a while.

If you played in a random AT Arkveld or Savage Omega lobby:

1. What teammate weapon makes you more confident the hunt will succeed?
2. What teammate weapon makes you feel like the hunt will fail?
3. Would you instead rather have 3 other high DPS output weapons as opposed to seeing a Lance or a Hunting Horn (built for healing)?

Thank you!