Either way there's no tactical mission the WWII Raiders performed that isn't performed by the MEU(SOC)'s Boat Co.
The MEU(SOC)'s Boat Co. is trained & certified by the Special Operations Training Group to perform the mission of Clandestine Amphibious Raid.
Thats purposely by the design of the MEU's Special Operations Capable program creator CMC Gen Al Gray. He wanted a program that gave him the capability to slip a Co. of Marines behind enemy lines to disrupt Movement & Comm, & thats wht SOTG designed for him.
The Raiders were pioneers in that area, but Det-1 & the MSOCs taking the Raider name would've been symbolic only. The unit that most mirrors the capability set of the WWII Raiders is the MEU's Amphibous Raid Co.