ELI5: What is the difference between different anabolic steroids and peptides and what do they each do?

I mean they all obviously lead to increased muscle mass but what makes something like trenbolone different from just testosterone, or dbol, clen, HGH, RAD 140, mk677, anavar, halotestin, etc

Whenever I try to google it it just gives some gimmick chat gpt answer like they increase muscle mass and some yap, but what specifically do they do that differs them from each other?