Out of the Top 15 portal QBs on 247, 5 have committed, 2 seem like their destinations may be known, and 1 was a former 4 year starter here. So 8 are still available.
Top remaining are (247 ranking at front):
#2 Cameron Ward (Incarnate Ward)
#6 Kedon Slovis (USC)
#7 Zach Calzada (TAMU)
#10 Harrison Bailey (UTjr)
#11 Jack Miller (tOSU)
*Edit: Just for reference, Martinez is the #12 available QB in the portal, so the 5 listed are all supposedly better options.