At 8 my DD’s (now teens) were both a bit of a mixed bag.
Never tidy and had to be reminded to do more or less anything like washing and teeth brushing but could do them all independently.
They could make themselves drinks, cereal, toast etc.
They could work the TV by themselves.
They could dress themselves but had no sense of matching anything unless clothes were picked out for them.
Their reading was ahead of average and schoolwork too, though DD2 was quite sensitive would still get upset at things that most kids of 8 would brush off, though this changed with puberty.
Their speech and vocabulary were both very mature but at 8 both still wet the bed and wore DryNites at night.
They could both bake with a little supervision and follow a recipe with minimal direction.
They learned to tie their laces around the age of 7 if I am remembering right.