In general, put the person first
People with disability are people first.
People with disability are multi-dimensional.
They are not all the same or defined by their disability.
In general, it is advisable to use the person-first term ‘person with disability’ rather than the identity-first ‘disabled person’.
Of course, language is personal and people with disability are not a homogenous group. Some people will prefer identity-first language such as ‘autistic person’.
This is a legitimate preference.
Do not make the assumption that you know — ask the person.
Specific groups within the disability community may also have preferences for identifying their group or identifying a member of their group. For example, ‘person with Down syndrome’ is the preferred term in the Down syndrome community. However, the autistic, Deaf and blind communities generally prefer identify-first language. For example, ‘deaf person’ or ‘blind person’6. This is also true of some people with other conditions. Always respect individual language choices.