Thank you for the thread. It might be a good idea as well to add examples of what is/is not loli/shota to their respective wikis since those posts are not hidden to the general public unlike on Danbooru.
Exactly 751 out of 1969 explicit posts of flandre_scarlet on Danbooru are tagged loli, so this seems like a good post to start a check with.
post #5615 - No breasts, no hips, and a char often seen as a loli. I'm leaning simply petite because of the longer torso and smaller head, thoughts?
post #5614 - Since I mentioned its sister post, I may as well list it as well, especially because it seems more clear cut to be what I presume is not loli.
post #2775 - Take away the explicit rating and mark as child or just nothing?
post #10491 & post #10485 - I can see the former as petite due to the body, but the latter is more questionable.
post #10287 - This one really make me uncomfortable, the face looks pre-adolescent. Maybe it is just the realism getting me. Is the consensus that it is petite?
post #8997 & post #8996 - Not loli right? Should probably have the petite tag added for both eventually still though.
post #6113 - The very large head to body ratio on a petite body, but there are breasts. More an unintentional result of early outputs.
post #6037 - Loli, toddlercon, or just overly rendered chibi? post #6034 hints the intention, but still...
post #5047, post #5051, post #5055 - all loli? post #5052 makes me realize that some characters clearly shift age drastically thanks to different outputs, something you don't really see in non AI art.
post #3760 - Petite?
post #3757 - Loli?
post #3503 - Clearly meant to be a 17 year old petite catgirl, but NAI spit out short limbs and a big head. I don't think its loli, but questionable enough for a second look I guess.