How many hours do you have?
King Air is a single pilot aircraft. It's below 5700 kg.
Now, some operations may specify two crew, but that will be in the AOC and OM A.
Jetstream 32, I am pretty certain that's 2 crew.
There is a JAR OPS document out there that lists all the types and whether or not they are JAR 25/23 or whatever.
However, who are operating those types? Are they hiring? How do they normally recruit? What's the experience required to work for those companies?