Speaking as someone with an ASD, a vivid imagination, what appears to be excellent verbal skills (note the word 'appears') and who's learned how to care for other people, I'd say beware of any stereotypes.
If a child has real problems with unexpected noisy social stuff, has intense interests, and a real problem with their routine changing, and real problems with sensory things, it could be found by a professional to be an ASD.
It's very, very early days for the ASD scientists and experts. Because they only discovered it and tested for it fairly recently, and then only tested the badly behaved boys (Why? Easy - why test a child who's well behaved in the classroom, eh?), they ended up with a really silly checklist. Now they're realising that the majority of us don't tick the original boxes in the same ways. Some do of course, but the majority don't (not least all the adults who were never discovered as the tests were never done for us until we asked for them ourselves).
We sometimes seem helpful when we're actually trying to get control of a situation so it's not so scary, e.g. 'helping' a parent to wear clothes that don't scare us, jewellery we can expect, etc. The difference is that a non-ASD child will cope if you appear in an unexpected outfit with your hair styled differently, whereas I wouldn't know if it was you or not. If people change their appearance, my brain actually loses track of who they are. Not all ASD people do, but mine does. I lose old friends in shops if they're wearing their hair differently from normal. All very really.
Verbal ability - mine is really odd. I started by speaking in very long words indeed, more like a 'little professor' than a toddler, and people often mistake me for someone 'posh' because I can't hear tone of voice so never learned the local accent properly. I can chat to people about expected things, I can write like this for hours by putting together phrases that I know. But my brain actually sees pictures, not the words. Words are an add-on skill, and if there's a word that doesn't have a picture (like 'spirituality' or 'love'), and I can't think of a picture to explain it, it might as well say 'spoo' or 'flobble'. No meaning at all. None whatsoever. The emotional responses don't connect up in the right way to allow me to 'see' (understand) those words.