Those look like solid squats to me. There's still a little knee slide at the bounce as you say but considerably improved from the original post. (the very last rep gets a little off but presumably because you're tired by then)
I still think you could let your knees come more over your toes if you want (though that would feel different overall).
It also looks like there's some sort of (possibly vicious) animal stalking your gym. You're pretty vulnerable to predation when temporarily weakened by heavy squats so be careful not to get eaten.
It's encouraging to know that things are headed in the right direction, and that I have some idea of what I should be doing. Thanks again for all of the feedback. I guess now I'll just stay the course and keep adding weight to the bar.
And astute observation on the beast. She typically goes in to attack mode when I am most vulnerable. She is especially fond of going in for the kill right after I unrack the bar for a bench press. Disaster has yet to ensue, but the spotter arms are there just in case.