| -0.96092504 | Gonadotropin-releasing hormone |
| -1.0139045 | Peptide |
| -1.0167526 | Viral |
| -1.0702392 | Hormone protein |
| -1.0753603 | Nucleotide-like |
| -1.121141 | Olfactory |
| -1.149667 | Amine |
| -1.1678598 | Thyrotropin-releasing hormone & Secretagogue |
| -1.22896 | Prostanoid |
| -1.256828 | Cannabis |
| -1.2583944 | Melatonin |
| -1.3554713 | Platelet activating factor |
| -1.3906994 | Lysosphingolipid & LPA (EDG) |
| -1.4624752 | (Rhod)opsin |
| -1.7564273 | Class A Orphan/other |
| -0.9991365 | Mas proto-oncogene |
| -1.0191989 | GPR |
| -1.1905658 | SREB |
| -1.2056113 | Chemokine receptor-like 2 |
| -1.2426593 | GPR37 like (peptide receptor) |
| -1.258336 | GP40 like |
| -1.2647793 | ORPH |
| -1.3214349 | Adrenomedullin (G10D) |
| -1.3235172 | RDC1 |
| -1.4053632 | BONZO |
| -1.4327718 | yet even more Class A Orphans |