GetComponentGroup in jobs vs IJobProcessComponent (...)

Maybe such topic exists, but my forum search don't yield desired results.
In such case, please point me to relevant thread, if appropriate.

So,
I use both GetComponentGroup (without Inject) in IJob (for single threading) and expect working as well IJobParallelFor;
and I use IJobProcessComponent / IJobProcessComponentWithEntity.
For either job type and relevant system application, they work great accordingly.

But can anyone briefly refresh my knowledge, reading GetComponentGroup?
If I use it for IJobParallelFor vs instead IJobProcessComponent, (when either case works), is still more preferable to use IJobProcessComponent? Last seams more clean. But in fact, I haven't tested, if GetComponentGroup works with IJobProcessComponent?

Can anyone confirm please?
Thx.