Just to clarify.. some parts would be part of all three 'groups' and you would usually call them 'Record'... Record cranks with either Nuovo or Super chainrings... Strictly speaking there is no such thing as Nuovo Record cranks or Super Record cranks. Same thing applies to brake calipers (not levers) and hubs I think, apart from the soon-abandoned titanium hub spindles. There was AFAIK no Nuovo Record part that couldn't effectively become Super Record by replacing a few steel bolts/spindles with titanium ones-not before 1978, anyway..
Effectively, 'Record', on it's own, means; 'unchanged since 1967-8, still part of group'.