I can choose my own categories and add my own stuff, as detailed as “white linen swimsuit cover”, or as simple as “jacket”, as appropriate for that list. I can copy a trip,add travelers (although honestly I only pack for myself so I can’t rate that feature). It has everything I need!
I pack really lightly, perhaps not quite “minimalist”, but close, so there’s not a huge amount to list, but whatever’s in the list is pretty important and it’d be bad to forget.
I’ve tried a number of others where the list is prepopulated, some even asked me to specify gender and included more crap on the packing list to carry - so it assumed because I’m female I must pack a lot of things I don’t need? I definitely don’t need to support that kind of design thought process!