| 100% | ANEG | 4 | Quite an uncommon blood type, for short |
| 69% | ANEG | 4 | Uncommon blood type, for short |
| 55% | APOS | 4 | Blood type, for short |
| 55% | ONEG | 4 | Blood type, for short |
| 54% | ONEG | 4 | Universal donor blood type, for short |
| 53% | ONEG | 4 | Universal donor's blood type, for short |
| 53% | BNEG | 4 | Rare blood type, for short |
| 53% | ONEG | 4 | Rare blood type, for short |
| 53% | ANEG | 4 | Rare blood type, for short |
| 53% | ONEG | 4 | Universal blood type, for short |
| 53% | ONEG | 4 | Certain blood type, for short |
| 53% | ONEG | 4 | Valuable blood type, for short |
| 52% | ONEG | 4 | Much-desired blood type, for short |
| 51% | NEG | 3 | Blood type modifier, for short |
| 51% | POS | 3 | What "+" means in a blood type, for short |
| 50% | ABPOSITIVE | 10 | What's an uncommon blood type ... or a hint to this puzzle's theme |
| 43% | ANEG | 4 | Uncommon blood type, informally |
| 43% | BPOS | 4 | Uncommon blood type: Abbr. |
| 43% | ONEG | 4 | Universal blood donor's type, for short |
| 41% | ONEG | 4 | Fairly uncommon blood type, informally |
| 40% | ONEG | 4 | Universal blood donor's type, for short (2 wds.) |
| 40% | ABPOSITIVE | 10 | Best blood type for a transfusion recipient |
| 37% | ITAL | 4 | Type type, for short |
| 37% | ONEG | 4 | Blood designation, for short |
| 37% | FAM | 3 | Blood relatives, for short |
| 37% | ITALS | 5 | Sloping type, for short |
| 37% | LCD | 3 | Monitor type, for short |
| 37% | CRT | 3 | Monitor type, for short |
| 37% | NCO | 3 | Army type, for short |
| 37% | LAB | 3 | Retriever type, for short |