These don't have SDK counterparts.
Here are the EZX versions of SDKs:
Fields of Rock SDX -> Into The Dark EZX
Legacy Of Rock SDX -> Classic Rock EZX
Death & Darkness SDX -> Dark Matter EZX & Death Metal EZX
Decades SDX -> Big Band EZX
The Rock Foundry SDX -> Hard Rock EZX
The Progressive Foundry SDX -> Progressive EZX
Indiependent SDX -> Indie Folk EZX
Metal Machinery SDX -> Metal Machine EZX
The Rock Warehouse SDX -> Rock Solid EZX
Roots SDX -> Jazz EZX
Music City USA SDX -> Nashville EZX
Custom & Vintage SDX -> Vintage Rock EZX
The Metal Foundry SDX -> Metalheads EZX
