Who are the Best Real Estate Gurus for each Real Estate Subject?

[Manuel Angeles]

Whats Up Bigger Pockets Family !

In your opinion, 
Who do you think are the best Real Estate Gurus for each Real Estate Subject:

Example:
Best Guru for Wholesaling: 
Best Guru for Raising Private Money: 
Best Guru for Multifamily Repositions: 
Best Guru for Fix and Flips: 
Best Guru for Marketing : 
Best Guru for Realtor Training:
Etc......

Which of those have provided you with the most value ?

Which one of them has the biggest following ? 

Which ones are the worst ?  

Have any of these Gurus ever scammed people ?

Who are the ones that operate from the heart, with integrity ?