Legal Insurrection has an in depth and interesting take on the last potentially viable charge left for Kyle Rittenhouse (unlawful gun possession by someone under 18). Worth a read:
https://legalinsurrection.com/2021/11/the-injustice-of-the-gun-charge-against-kyle-rittenhouse/
I think Kyle is screwed on that one. While the article rightly points out a technical "loophole", the spirit of the law appears to be to exclude minors who are legally hunting. If he is convicted only on that misdemeanor charge, he might have a successful appeal in a court where the law can be argued exactly as written, but this trial is probably not the place to do that. If he is acquitted of all the other charges, I'll take that as a win.