There's one company that sells a BJD im full scale, looks like a manikin. I don't know if it has been discontinued and I certainly don't remember which company it was, but it was pretty expensive.
There are 1/2 bjds that are child size! I follow a doll collector on tumblr and they has two: Wanda-chan by Neo-Fukuoka and Autumn Leaves by Dust Witch.
Magical Angel sold a 1:1 scale doll (although I don't know if anyone bought one). They have since gone out of business.
One YouTuber bought her, but she wasn't very happy with the doll. Unfortunately it seemed to have too many issues.
Lee-el made 90cm boys when they were in business. Immortality of Soul makes 80cm boys, I have one and it's quite nice~
I love bigger dolls too!! For me the bigger the better haha XD That doll really is big, but you know if she were really beautifully sculpted and detailed, I think I'd have liked her more.
The Magical Angel Iris bjd is 5 feet, 10 inches tall. That might be too big for some of us. I'm concerned the stringing method of jointing wouldn't hold up at that size.
I love big dolls too, so I'm totally going to watch this. So far my big dolls are just in vinyl. Oh gosh that Magical Angel doll is taller than me! Hmm new personal rule, the doll can't be bigger than me!