There is none because signal group are too risky and they just know how to hype a project but the moment youb buy,
I think you aren’t correct, all telegram group isn’t same, it is true that many group provide fake signal but not all. I see some telegram group provide news basis Signal and also they provide signal of Hidden Gems for Long time investment.
Although that is right, I wonder if their signal can be used for a long-term investment since many coins can be hidden gems. Besides that, it is difficult to search for that group because what I see on the telegram, many of them are just copy paste from other VIP groups so that will work for the long term. And do not forget that those groups need you to pay for their services so I do not recommend joining. That is why you better learn to analyze the market by yourself so you do not depend on that groups and you will have a chance to improve your skills. But that will be up to you.