| -0.95237887 | Gonadotropin-releasing hormone |
| -1.0663913 | Nucleotide-like |
| -1.0703031 | Hormone protein |
| -1.092181 | Viral |
| -1.164636 | Thyrotropin-releasing hormone & Secretagogue |
| -1.1878287 | Prostanoid |
| -1.2307386 | Melatonin |
| -1.2325811 | Cannabis |
| -1.3380497 | Olfactory |
| -1.3610272 | Platelet activating factor |
| -1.374881 | (Rhod)opsin |
| -1.3815157 | Lysosphingolipid & LPA (EDG) |
| -1.42754 | Class A Orphan/other |
| -0.9810935 | GPR |
| -1.0007403 | Mas proto-oncogene |
| -1.2028949 | SREB |
| -1.2166845 | Chemokine receptor-like 2 |
| -1.2347233 | GPR37 like (peptide receptor) |
| -1.2696981 | ORPH |
| -1.2735832 | GP40 like |
| -1.2886959 | yet even more Class A Orphans |
| -1.3173982 | Adrenomedullin (G10D) |
| -1.3266189 | RDC1 |
| -1.4055866 | BONZO |
| -1.6156662 | Peptide |
| -1.8470007 | Amine |