The five that earn their place
- Margin tier — high, medium, low. The most useful by a distance.
- Performance tier — best seller, steady, untested, dead.
- Seasonality — so budget can move with the calendar automatically.
- Price band — different bidding logic for €20 and €200 items.
- Stock depth — so you stop pushing what you cannot fulfil.
Then build campaigns around them
Labels are only useful if the structure acts on them. Otherwise it is tidy data doing nothing. Structure that follows profit.