AITAH for calling out My Uncle in front of everyone After making weird comments on my girlfriend's looks and being too touchy?

So basically, at a family barbecue last weekend, my uncle (mid-50s) kept making creepy comments about my girlfriend Kate(21F) who I invited. At first, it was backhanded compliments like, "Wow, you’re way too pretty for him," but then it got worse-"I would have snatched you up back in the day," and "Must be a struggle to compromise for me?" He even joked about how my girlfriend must get hit on all the time and how I should "keep an eye on her."

On top of that, he was being way too touchy, putting his hand on her lower back, touching her arm when he laughed, and even leaning in way too close while talking to her. My girlfriend was clearly uncomfortable but tried to brush it off. She told me privately that it made her uncomfortable,

I confronted him in front of everyone, straight-up calling him a creep and telling him to knock it off in a loud way. He got defensive, saying he was just joking, and my mom told me I was out of line for embarrassing him like that.

Some family members agreed with me, but others think I overreacted and should've handled it privately since everyone knows him as a joker and just loves making conversation which he is good at. Some male cousins of mine are insinuating I was jealous and exaggerating stuff because my uncle talked to their partners too and they didn't have any complaints like Kate.

My Uncle said he was just making jokes, and he didn't mean any of them, and he is really disappointed that I looked at him as that kind of guy

AITA for calling him out publicly instead of pulling him aside?