how are the Pakistan super league 2020, 2 categories of players?

Platinum Players :
Mohammad Nabi
Mujeeb-ur-Rehman
Rashid Khan
Dan Christian
Ben Cutting
Chris Lynn,
Moeen Ali
Harry Gurney
Alex Hales
Chris Jordan
Liam Plunkett
Adil Rashid
Jason Roy
Sandeep Lamichhane
Colin Munro
Hashim Amla
JP Duminy
Colin Ingram
Rilee Rossouw
Dale Steyn
Imran Tahir
Angelo Mathews
Thisara Perera
Carlos Brathwaite
Dwayne Bravo
Evin Lewis
Sunil Narine
Kieron Pollard

Diamond Players :
Roelof van der Merwe
Luke Ronchi
Kyle Abbott
Cameron Delport
Marchant de Lange
Rassie van der Dussen
Robbie Frylinck
Simon Harmer
Heino Kuhn
Duanne Olivier
Dane Vilas
Hardus Viljoen
David Wiese
Niroshan Dickwella
Danushka Gunathilaka
Kusal Mendis
Dasun Shanaka
Isuru Udana
Fabian Allen
Johnson Charles
Rahkeem Cornwall
Shai Hope
Alzarri Joseph
Brandon King
Keemo Paul
Sherfane Rutherford
Daren Sammy
Marlon Samuels
Oshane Thomas
Kesrick Williams.