With the OSR canon there is general acceptance of the rules requirements, in terms of the rules from the original fantasy game versions. Is there also a canon of story telling elements that “define” the “core” OSR?
Tavern - starting in, base of operations, food and drink
Equipment List - starting equipment by class, basic list with ten foot pole etc.
Village - starting in, base of operations, blacksmith and general store
No magic items in starting equipment
Looking back over the profusion of WHITEFRANK books, and looking at the Item Catalogue, I can see that when I deliberately chose an OSR / Dave Arneson theme most of the above was included even in my “deviated” fork of OSR, and I am thinking some version of the “canon” setting is probably essential for OSR. For example even in a planetary romance book or a Moebius-inspired book, it will still most likely come down to bar / cantina / drug parlor / brothel / tavern / saloon and space colony / spaceship / village / colony / fortress with small population. Likewise the use of an item list as a story telling device, and the shortcut of starting equipment.
The very first experience of playing ADVANCED dungeons and dragons for many people included being handed a photocopied or written out equipment list for example, on which to spend one’s meager hoard of copper pieces. War Dogs, flasks of oil and the rest.