@Gameengineer ,
Definitely follow Navy Hoops hierarchy.
The Marines draw from USNA and NROTC/MO first. PLC (and OCS) are used to "top off" their mission needs for second lieutenants each year.
A quick PLC recruiting story:
DS had idolized the Marine Corps most of his life. Nominated to USNA, he was heartbroken to receive an April TWE. To further rub salt, he also was turned down for a NROTC/MO scholarship to an SMC. Even though he was accepted to the SMC, we could not afford for him to attend the SMC without the scholarship.
After being turned down by USNA and the NROTC/MO scholarship, DS started in 2015 as a
non-contract Army Cadet at a state school. A few weeks into the year, he was approached by a Marine OSO (probably got his name from the NROTC/MO application). He pushed him to join PLC
concurrent with Army ROTC. (DS's college did not offer NROTC). DS asked the Marine OSO if this would upset his Army cadre? He told him not to inform them. By that point DS had felt bonded with his battalion and thought this whole thing felt wrong.
DS politely declined to do PLC while enrolled in AROTC.
Later that year he was awarded a three year AROTC scholarship and is now thriving in his battalion as an MS-II.