I have a gaming channel and I upload both, commentary and as well, non-commentary gameplay walkthroughs video. I have seen a lot of non-commentary gaming channels getting monetized with no issues, you just need to make sure that If you're to upload a non-commentary video, make sure that you do some sort of edits in the video and not just blindly record and upload without having any sort of special effects or edits. The edit can be anything, such as having a CTA or having some sort of intro and some special effects in the middle of the game or anything that makes it a bit unique content.
As mentioned above, there are some publishers or developers who will not allow your video to get monetized If there's no voice-over, while, I definitely agree but the most important thing you need to remember is to disable the game music, that's the key, not all games have copyrighted music but it's safe to disable them as such publishers are way too strict of who uses their music, and most of them don't think twice sending copyright strikes, thus, overall risking your channel.