Top IB Training Provider — What’s the Industry Standard?

Trying to figure out which training provider is actually used by top investment banks and elite boutiques — places like Goldman Sachs, J.P. Morgan, Morgan Stanley, BofA, Citi, Evercore, Lazard, Moelis, PJT, Houlihan Lokey, etc.

I’m joining full-time soon and want to prep properly. Ideally, I’d like to use the same provider these firms use to train their new analysts.

From what I’ve seen, the most common names are:

• Financial Edge
• Wall Street Prep
• Training The Street
• BIWS
• CFI

Would really appreciate any insights from people in the industry who’ve gone through training!