This list depends on your business. Instead of various "not qualified" items, I would prefer :
- Budget not decided
- Budget out of range/unsufficient
- Authority not buying in
- Need undefined / Unclear
- Need not addressable
- Timeline /dead line not set
I would not use a "non decision maker" as usually, you would start with a sponsor, the source of the need, and that person might not be the decision maker, but this is fine.
I would surely not use "will never buy" as one never knows "Out of target scope" is preferable, as it means the person / company is just not target for your offering.