| -0.44653457 | Class A Orphan/other |
| -0.79123324 | yet even more Class A Orphans |
| -0.99038005 | GPR |
| -1.0013968 | Mas proto-oncogene |
| -1.2025783 | SREB |
| -1.2129515 | Chemokine receptor-like 2 |
| -1.244614 | GPR37 like (peptide receptor) |
| -1.2654477 | ORPH |
| -1.2764165 | GP40 like |
| -1.316601 | RDC1 |
| -1.3217021 | Adrenomedullin (G10D) |
| -1.4098173 | BONZO |
| -0.8570994 | Peptide |
| -0.96107936 | Gonadotropin-releasing hormone |
| -1.0379956 | Nucleotide-like |
| -1.0390694 | Viral |
| -1.0715412 | Hormone protein |
| -1.1617335 | Thyrotropin-releasing hormone & Secretagogue |
| -1.228794 | Melatonin |
| -1.2441185 | Cannabis |
| -1.249389 | Prostanoid |
| -1.3267195 | Olfactory |
| -1.3493494 | Platelet activating factor |
| -1.3954046 | Lysosphingolipid & LPA (EDG) |
| -1.4321167 | (Rhod)opsin |
| -1.8418401 | Amine |