| 1 | = | WAT (wide-angle tail) and NAT (narrow-angle tail) sources |
| 2 | = | W-shaped sources |
| 3 | = | TB (three-component bent) sources |
| 4 | = | B (two-component bent) sources |
| 5 | = | RING (ring-type) sources |
| 6 | = | Ring-lobe type sources |
| 7 | = | HYMOR (hybrid morphology) candidates (an incidental list) |
| 8 | = | X-shaped sources |
| 9 | = | DD (Double-double radio) sources |
| 10 | = | CJ (Core-jet) sources |
| 11 | = | SZ (S or Z-shaped) sources |
| 12 | = | GRS (Giant radio sources) (an incidental list) |
| 13 | = | tri (tri-axial type morphology sources (120° rotational symmetry) |
| 14 | = | QUAD (group of 4 approximately point-like sources) |
| 15 | = | Other interesting sources |
| A2 | = | Annotations and components for groups with >=4 components (table A-II) |