List of consultants who are willing to help?

Hello all,

Could someone please tell me whether any list of consultants exist who are, possible for mutual benefit, willing to remotely help on different projects, related to e.g.:

large shareholders of publicly traded companies engagement
corporate finance
custodians for stocks
investment banking
fund management
asset management
wealth management
investment management
capital markets
mutual funds
hedge funds
pension funds
prime brokerage
family offices

I contacted tens of headhunting firms asking them if they could get me in touch with experts (consultants) from some of above areas. Experts based on their network of connections (relationships). No progress has been done with approaching those headhunting (expert search) firms so I'm wondering if there is any more direct way, other than LinkedIn, to get in touch with those consultants? Of course in the list (database) I'm asking for should be also some contact info so I could contact them.

Primary goal is to get in touch with them and ask them whether they know anyone from their own network of contacts who have some connections to the wanted audience I wish to clarify to those consultants.

I'm looking for particularly European consultants but worldwide are welcome too because they will know contacts who have connections worldwide.

I would like to repeat my question again: Is there any list available where I could see consultants in the areas of expertise as mentioned above?

Is there any database of consultants who are willing to help with contact info?

Thank you in advance.