its most likely 2 different guys.
The "ear ache music" rappers are completely seperated from dope underground rappers.
Take Livewire records for example....its a bunch of ear ache music rappers, they didnt even know that SIDEWAYS (rapper from antioch) ALREADY HAD A LABEL called Livewire. The ear ache music cats dont care about knowing if someone already has their name, they are only concerned with releasing as many albums as possible so that 15 year olds on scraper bikes can buy them,