Thank you for your comment. I am in a similar situation where I create content about parenting. I, too, only post photos where their faces don't show, which I think is a safe way to do it.

For personal channels: I can't say definitively the best way to protect them just in case. However, from research, if you only have close personal friends on those personal accounts, and you don't use hashtags, you should be ok. If you have extra acquaintances or people you aren't sure if you can trust, posting your kids without showing their faces or showing their faces but in a bigger group would be more ideal.