| -0.99886316 | Gonadotropin-releasing hormone |
| -1.0988626 | Hormone protein |
| -1.1783586 | Thyrotropin-releasing hormone & Secretagogue |
| -1.1938498 | Prostanoid |
| -1.2016841 | Melatonin |
| -1.216682 | Viral |
| -1.2521856 | Cannabis |
| -1.2845806 | Nucleotide-like |
| -1.3024235 | (Rhod)opsin |
| -1.3431804 | Platelet activating factor |
| -1.372684 | Lysosphingolipid & LPA (EDG) |
| -1.4431947 | Olfactory |
| -1.6806406 | Class A Orphan/other |
| -1.0093598 | Mas proto-oncogene |
| -1.1332333 | SREB |
| -1.1885846 | GPR37 like (peptide receptor) |
| -1.2009275 | Chemokine receptor-like 2 |
| -1.246634 | GP40 like |
| -1.2562716 | ORPH |
| -1.3130635 | Adrenomedullin (G10D) |
| -1.3151953 | RDC1 |
| -1.4044573 | BONZO |
| -1.4634813 | yet even more Class A Orphans |
| -1.6901529 | GPR |
| -1.8697137 | Peptide |
| -2.1475353 | Amine |