Your Concrpt Plant labels are not listing all Concept Plant types.
You have the CAD system variable USERR1 set incorrectly.
1. Delete any existing Concept Plant labels from your plan.
2. Type USERR1 in the Command line and press Enter.
3. When prompted to set a value, type 1.
4. Place a new Concept Plant label. The plant list should show up correctly in the label.