Class I = binds to androgen receptor
Class II = does not
These pro-hormone classifications are based on their steroid counterparts. If there are any revisions needed PLEASE post so below. If that goes unnoticed, PM me.
Boldenone based - 1,4AD & Bold
Progestin based - (similar to trenbolone) - Trenadrol & Trenaplex
Dienolone based - (again similar to tren) - Mdien
Mepitiostane (Thioderon) based - Epistane & Clones (like Havoc & so on so forth)
Desoxymethyltestosterone/DMT (Madol) based phs - Pheraplex & clones
DHT (Dihydrotestosterone) based phs - M5AA
Masteron (Dromostanolone) based - Superdrol & Clones
Oral Turinabol (Dehydrochlormethyltestosteron e) based - Halodrol & Clones
Dianabol (methandrostenolone) based - M1,4ADD, M1T, 1-T, Methyl XT
Winstrol (stanozolol) based - Winztrol, Orastan-A, Furaguno, etc
Furazabol (miotolan) based - Furazadrol etc
Progesterone based - Revolt, Propadrol, Max LMG
Clostebol based - Chlorodrol, Oxyguno
If you plan on stacking two pro-hormones at the same time, the best combination are class I mixed with a class II.
For example SD/Bold, Halo/Tren, M1T/Prop, and so on...