A list with data variables that can be used on templates?

[Nuker]

Hi,

for years I have been looking for a list that contains all the variables that can be used on the templates to fetch data such as $this->memberData['member_id'] that produces the ID of the member that is seeing the page or $this->memberData['members_display_name'] that produces their name but Im still unable to find it. Is there anything like that I can use as a reference?

Thank you.