[Hcb3200]

Metering and residual valves are the same thing that’s your 2 pound and 10 pound valves to keep pressure on the brakes when the master is on the frame.
A proportioning valve is just that it does not have a different name

Some master cylinders have the residual valves built-in. You should see it just inside the port.

Some modern proportioning valves off of GM trucks and cars have a combination valve where it’s both are proportional, and a residual all built in together