The only native Houstonians with a distinctive regional accents are the black(aados) ones. Whites and others don't have any specific houstonian accent.
And it might not be as prevalent in the suburbs or outlining regions, but that shyt is still alive and well deep in the historical black neighborhoods like the wards, sunnyside, studewood, 44, trinity and kashmere etc etc
Also, Houston is full because of immigrants from other countries, not out of towners.
And damn I didn't know that canceled MHMS. Ain't listened to magic 102 in a while. Shame.