Well I live in Brighton and demonstrative quirkiness is such a daily occurrence that I'm thinking of moving to somewhere 'normal'. The school my DC go to has parents that do the school run on skateboards and they're the Dads that talk very loudly about their day ahead and always wish everyone a great day, as in, 'well you guys have a great day!', skateboard slammed down in the playground, skating off to work at 40!
I have one DC in Reception and I have to wait around with her and others until the classroom opens, whilst you're waiting the child can choose a coloured band for their hot school meal and the menu which we were all given a copy of for home, is stuck to the window in case you've forgotten to check- you can look at it whilst you wait for the classroom to open, to decide what your child wants. Every day without fail, a Mum loudly proclaims the 'yummy' choices to her daughter and everyone else who is waiting outside the classroom, as in, 'Anneka, wow, we have MACORONI cheese today with yummy broccoli and carrots or barbecue chicken with rice and Choc o late pudding, or JACK ET potato and TOOna (Tuna, it's Tuna), what are we going to choose?' Everyone else manages to go over the options at a normal pitch and before anyone says anything, the girl is a normal weight, doesn't need to be persuaded to eat and has no SN as my friend is good friends with the Mum and would know.
We also have a Dad that talks about his daughter to everyone waiting whilst he interacts with her, like we would be enthralled by her every move as he is or will make a deliberate point of interacting with the children in my DD's class who are lucky enough to be friends with his DD, he doesn't engage with the parents of these children but will say things like, ' What are you guys up to? I think we're all coming over to ours for Friday movie afternoon aren't we, it's going to be so much fun?' Classroom opens and the DD ignores him and goes in, cue, 'what is this Alice, don't I even get a kiss goodbye from my boo boo anymore'?' It's all done very loudly and conspicuously and it's honestly cringeworthy. I maybe bias as his DD is vile to mine- been hit by her, told to leave the area she is playing in as she is not included etc. but I've been told by the teacher that this girl is just a very different kind of 'personality' to mine and that she is just very 'self confident', almost as if that excuses her behaviour. I can't help think that her parents expect an audience for their daughter and it has resulted in the DD having a self inflated view of her standing in the classroom, that even the teachers are convinced by. So I would include conspicuous, down with the kids, parental behaviour on your list!