test.groovy

import groovy.transform.Field

@Field
def profiles = [
    prod: ["master", /release\/.*/],
    dev: ["develop", /PR-.*/]
]

String getProfileForBranchName(String branchName, String defaultProfile = "default") {
    return profiles.findResult { profile, candidates -> candidates.any { branchName ==~ it } ? profile : null } ?: defaultProfile
}

["PR-123", "master", "release/1.0.0", "foo", "develop"].each { branchName ->
    println "Profile for branch $branchName is ${getProfileForBranchName(branchName)}"
}

// Output:
// Profile for branch PR-123 is dev
// Profile for branch master is prod
// Profile for branch release/1.0.0 is prod
// Profile for branch foo is default
// Profile for branch develop is dev

Thanks a lot! It was a super helpful example. I did not exactly use this code but I used to play around and it helped me to come up with a good idea :) lets see if it works...