I hope this comes across as kind and informative, and not me just rocking the boat...
Asperger's syndrome was a previous DSM diagnosis that generally meant autism with no speech delays or intellectual disabilities. This is the source of the stereotype that autism=intellectual disability and aspergers=gifted.
However, if you want to be specific and dispel misconceptions then: autism is autism. The trouble with functioning labels is that there is no consistency in how they're used - this is why aspergers was dropped from the DSM and is now referred to as Autism 1.
In my personal experience, functioning labels have only ever served other people's capacity to validate or dismiss me. They don't reflect what specific supports I need or my development (not to mention I can go from low to high functioning multiple times in a single day lol!).