When an aria-label or aria-labelledby attribute is applied to a <ul> or <ol> element with no visible list markers, VoiceOver will announce the list as a “group”. If the list role was announced in this situation, it would provide a way for web developers to declare a “data list” without the need to use role=“list” which duplicates existing HTML semantics. Labelling lists in this way would suggest a genuine use of a list, rather than a purely presentational use.
<rdar://problem/48739008>