Has anyone seen a comparison of Jacoco vs IntelliJ code coverage capabilities? I'm guessing IntelliJ is better but it does not work well in a CI/CD environment last time I checked.

i think intellij coverage is just kover and that works fine on CI

Wow. That's good news. I think you are saying that Kover hides IntelliJ (or appropriate pieces of IntelliJ) such that when Kover is configured in Gradle to use IntelliJ, Kover will generate full results on a Github or Gitlab CI build.

Seems that the choice is still there: The migration doc says:

IntelliJ Engine was renamed to Kover Tool.

To use Kover Tool with default version need to call

kover {
    useKoverTool()
}

To use JaCoCo Tool with default version need to call

kover {
    useJacocoTool()
}