Normal toddler behaviour or something wrong?!

This is all normal behaviour don’t let it make you feel uncomfortable we all were once like this if anyone says something maybe look at better discipline techniques if it makes you feel better my toddler is very similar this morning he had a major tantrum because he didn’t want to take his shoes of to get changed

Idk for sure, cause I don’t remember being 3 but from what i do know & remember of my childhood I was a lot like your description of mornings with your daughter. I have had idiopathic hypersomina my entire life & never knew it was a thing that existed until 2 years ago. I was brushed off as lazy cause I had difficulty waking up & seen as unruly or rude when I was woken before my body was ready to stop sleeping. I am really not sure what would be the prime age for testing for it cause I was 23 when I learned it existed myself. (Which is why I feel inclined to share this at all!!! Not saying it is the case for you guys as the rest of what you’ve described sounds pretty average for toddlers!)

3 can be hard. My mom has said that when I turned 3 my head spun round and I went from the sweetest child to demon spawn.

3 is an age where you pick your battles! Will wearing the doctor costume to bed harm her? Nope, not worth the battle!

The way I work out whether it's a battle worth having is by thinking 'is this something that could carry through the rest of their life?'
Letting them not brush their teeth? Absolutely detrimental, lay down the law.
Chocolate spread on toast for breakfast for the third day running? Bit of a grey area, make sure lunch and dinner are healthy.

My daughter was absolutely feral as a toddler, I did a lot of laughing at the ridiculous stuff she got up to and gave loads and loads of cuddles for the tantrums. It's hard to remain calm when they're testing you but your concern needs to be focused on establishing mutual respect and communication with your child, not what the neighbours are thinking. Sod them!