a lot of people, especially since you were so broad. im a big fan of stuff like reversal of man, combatwoundedveteran, pg99, majority rule, asterisk...
Definately, next thing you know applecore breakdown skank core is gonne be all the rage. Its infected metal as well, everytime a hardcore band includes a non-punk influence, a new core genre seems to be born.
madball did not start 'the scene' i donno who did but there were plenty of hardcore banRAB before them including the crumbsuckers, agnostic front, hell even sick of it all was around before them i believe.
dude poison the well is defiantly not fucking screamo, and atreyu is not a fucking emo band because they have singing parts to me tuning to C classifies you as some type of metal, plus when was the last time you heard an emo band with guitar parts like atreyu