Bible Hub Rocks!
Like it better than Bible Gateway because it has less advertisements.
I like Matthew Henry for general commentary. I actually thought he may have been anointed. He’s still tainted by Christendom, but has some very profound and clear insights.
Ellicot stands out as good. Barnes has some good insight.
I don’t have details from the WT on which are used by them.
I’ve spent hours perusing the commentaries on Hub and I find that it’s fairly clear when you stumble across BTG’s garbody gook vs. well thought out biblical reasoning.