Actually, Coach AL is #2 behind Mark Loureiro of Escalon.
But I fully agree with your point about him being overlooked. While Grant Union has certainly been fortunate with their abundance of talent, there are many other challenges that face Coach AL that other coaches might not have such an easy time with. He's done a tremendous job there. His predecessor, Bob Vukajlovich, was also a very good and successful coach, but the Pacers never reached the same heights under his leadership, despite the talent, as they have with Coach AL.
To me, this is a very underrated accomplishment -- especially for a public school program. To not have a season here and there where you just don't have it or aren't able to put it together for some reason is crazy.
In recent years with the expansion of the playoff pools, it's not such a big deal. But a good portion of Coach AL's coaching career came during a time when only the top 2 teams in league made the postseason.
For example, in 1996 the Pacers ended the regular season in a 3-way tie with Nevada Union and Del Campo for the CAL title. But only 2 teams could advance to the postseason (the CAL didn't get 3 that season). NU lost the coinflip and had to sit at home despite a 9-1 record with the lone loss coming by 1 point on a last second TD.
While the Pacers kept their streak alive in that instance via a coinflip, the fact that they never suffered any average or losing seasons is remarkable. Injuries. Grades. Down year in talent. Lots of things can happen to derail a season. But it hasn't happened, with the lone exception of a 5-5 regular season in 2012 that turned into 5-6 with a 1st round playoff loss.