| -0.5006359 | Class A Orphan/other |
| -0.5435838 | yet even more Class A Orphans |
| -1.0035633 | Mas proto-oncogene |
| -1.1908768 | GPR |
| -1.2017096 | SREB |
| -1.215853 | Chemokine receptor-like 2 |
| -1.2353915 | GPR37 like (peptide receptor) |
| -1.271419 | GP40 like |
| -1.2716368 | ORPH |
| -1.3225173 | Adrenomedullin (G10D) |
| -1.3266878 | RDC1 |
| -1.4056423 | BONZO |
| -0.95997906 | Gonadotropin-releasing hormone |
| -1.0339488 | Nucleotide-like |
| -1.0713829 | Hormone protein |
| -1.0886456 | Olfactory |
| -1.0918636 | Viral |
| -1.1555526 | Thyrotropin-releasing hormone & Secretagogue |
| -1.2224839 | Prostanoid |
| -1.2290913 | Melatonin |
| -1.2618443 | Cannabis |
| -1.3071316 | Peptide |
| -1.3561833 | Platelet activating factor |
| -1.3864805 | Lysosphingolipid & LPA (EDG) |
| -1.4894352 | (Rhod)opsin |
| -1.7786192 | Amine |