I think that part needs addressing:  what is "specific" about those 3 coins?  Nothing.  

Is it that their devs abandoned them and/or made promises that weren't kept?  

That they were released, pumped and dumped, and they have steadily lost value ever since?  

There's nothing specific about any of that, in the world of altcoins.  That's the norm.  It's almost all of them.  These aren't unusual scamcoins, they're average typical altcoins.  That's the problem we're trying to help solve.  

If you can find 3 altcoins that don't look like a bad group, then you probably have 3 altcoins that people wouldn't want to burn.  We couldn't afford to burn them anyway.