Need some real Bulldog Wisdom

[AHeroesvoice]

Hey everyone,
I’m reaching out because I’m honestly stumped, and I know no one gets bulldogs better than the folks here. I’ve had bulldogs in my life for many years — they’ve been my family, my friends, and my constant company. I probably spend more time with them than with people, and I wouldn’t have it any other way.
My newest guy, a 3‑year‑old English bulldog I rescued from the Sonoma County shelter about two months ago, has me scratching my head. His shelter name was “Mika Parsons,” but I renamed him Archie. He’s a Merle bulldog with the spookiest neon blue eyes I’ve ever seen — gorgeous, mysterious, and full of energy.
Now, I’ve got another bulldog at home, Bentley, who’s nine. They get along mostly fine — they have their rough‑and‑tumble moments, but nothing serious. The issue is Archie with visitors. At first, he was just rowdy and pushy when new people came by — jumping up, getting in their space, typical lack‑of‑manners stuff. at the SF SPCA). But lately, it’s escalated.
Archie’s started grabbing at people’s legs — not hard bites, but he jumps high and mouths at the upper thigh or even groin area. It’s happened three times now. No broken skin, but it’s not acceptable, and obviously scary for guests. Oddly, he doesn’t act this way at the park — no jumping, no aggression, nothing. It’s like a switch flips when he’s on home turf. Territorial, maybe? Has anyone here been successful having a dog trainer that stopped a dog from biting?
I’ve tried a citronella collar to interrupt the behavior — it startles him, but doesn’t really stop him for long. I’ve talked to the county shelter; they say they didn’t notice any issues. I find that a bit hard to believe, but here we are.
Archie’s a joy to wake up to, and I don’t want to give up on him. He’s incredibly sweet with me and Bentley, but this behavior’s got to change before someone gets hurt.
So — I’m turning to you all, people who know bulldogs inside and out. Have any of you dealt with this kind of over‑the‑top jumping or leg‑grabbing before? Did you find ways to get through to them safely without breaking their spirit? I know bulldogs can be stubborn, but Archie’s testing my limits, and I really want to do right by him.
Any insights, training tricks, or even stories of similar dogs and what worked for you would mean a lot.
Thanks in advance —Oh and if you're interested to see what I'm talking about copy and paste this link in your browser

https://www.tiktok.com/video/7600919639073361182

Mark (and the boys, Bentley & Archie)