I understand what you want but it is very difficult as you are looking for some kind of secret information that can easily help you to do this and this does not exist, the only way to recognize if a coin is any good or not it is to know about the technology behind cryptocurrencies in a profound way, if you do not know this then you are just gambling with your money if you invest in those altcoins, so unfortunately I do not think you have what is necessary to achieve the results that you want to get.
there's no shortcut on how to distinguish high potential projects. if you want to get out of the top alts, and check out the new ones. you really have to dedicate your time assessing them and digging their background. it is not an easy task as you need to apply all your learnings in crypto to identify the potential valuable projects. and if someone is suggesting you with a specific project, don't just follow blindly as he may just be endorsing it because he has vested interest on the project.
so yeah, signals in crypto is not to be trusted as most of them will just lure you to spend your funds and lose it in the process. you need to be smart when choosing a project to invest with.