I have an extensive list of power card macros for 3.5e (~4000 of them in fact at present, including 3500+ spells ready to go) but due to the fact that a lot of them are not OGL/SRD I can't share them for general use... the thing with macros as well is that most GM's will have their own flavour in them too. For example mine rely heavily on the API and utilise Powercards, Roll20AM, King's Summon Script, TokenMod, Ammo, ImageFlip (i think that is its name?) and the built in fx engine to streamline everything and therefore wouldn't be particularly useful for non-pro subscribers. I think there is likely some merit to the system specific wiki pages being kept up to date with key examples of what can be done with the sheet with regards to macros but as this is community driven it would rely on people taking the time to do so (i'm just as guilty as the 3.5e info I put in there when i was starting out is quite dated lol). What I found helpful was to create an excel/google sheets macro generator as they rely on certain formatting etc. For example I have an attack generator that nests the various attack options needed for a sheet and by changing just a few customisable options I can quickly create an attack for a monster that has BAB1 - 3, for a ranged weapon utilising a range of ammo (i have a custom 3.5e sheet too fyi) which will automatically decrease as used. I can add poison, whether or not there is a need to grapple/grab, power attack and more. All of this takes me less than a minute once i got over the hump of the initial setup: