Evidence required
A future ranking needs named entities, a consistent comparison method, and public evidence that can be checked against the relevant update.
Catch 1 Billion Ducks Tier List: Current Data Status
First-screen ranking-data status and explicit evidence standard for future tiers: there is not enough verified named weapon, dog, or duck data for rankings yet.
Current answer
No tiers are published
The official Roblox description confirms the broad play loop only. It does not identify comparable weapons, dogs, ducks, power values, costs, or performance outcomes.
What to use now
Use the official game page and the next-hunt planner instead of relying on unsupported tier claims.