re: ACC and SEC have the same amount of teams ranked in the preseason

to add on to this: These are the teams who've won a NC this century.

2000 - OU (soon to be SEC)
2001 - Miami (ACC)
2002,2014 - OSU (Big 10)
2003, 2007, 2019 - LSU (SEC)
2003, 2004 - USC (soon to be Big 10)
2005 - Texas (soon to be SEC)
2006, 2008 - UF (SEC)
2009, 2011, 2012, 2015, 2017, 2020 - Alabama (SEC)
2010 - Auburn (SEC)
2013 - FSU (ACC)
2016, 2018 - Clemson (ACC)
2021 - UGA (SEC)

In case it's not clear... there's a lot of SEC there. Not so much ACC.