Iso:
..............................w..........m........ ....s
.................................................. ..........................
...............................e..........n......t .........e
................................o.....o....x....o. ...o....o
.............................................q
..............................................f... .............
..............................................t
center and left guard responsible for nose and will lb (backside), rt guard and rt tackle double team dt to the mike, fullback lead on s, tb read and cut off of double team
lead zone: rt tackle and te double on de to strong safety/corner, center and rt guard zone tackl to mike, left guard cut off nose, lt tackle sift to will, full back lead, tb read de 1 to dt 2
Don't know who or what you checked, but it wasn't up to date. I guess some people call the lead zone play isolation, because that's what gets run most of the time in the pros, but the iso in its true form is base-blocked.