How many world champions have they produce and how long have they been active trainers?

We all know they weren't that good of a fighter themselves, but are they riding the glory of Floyd jr? They have a great fighter in Floyd Jr, how much credit do they actually deserve? I haven't seen any footage of any elder Mayweather telling floyd jr how to fight. Seem like Floyd trains himself.

Sr had Oscar for a while, and he has Guzman but how much credit does he actually have?

Do we lack great trainers today, is that one of the reason why these two Mayweather trainers are getting so much credit?