PG certainly isn't a strong point for Arizona but Jackson-Cartwright is more than serviceable at the position. He had a 3-1 assist/TO ratio and shot 42% from three. He can run the offense. They don't have much depth there though.Michigan St., KU, and Zona should be the heavy favorites.
MSU has the best combo of talent, depth, experience, and coaching. Probably have the best player in Bridges.
KU has great guards, but some depth issues inside.
Zona is weak at PG, IMHO, but very talented at every other spot. Ayton will be a beast.