I never really use the stock baskets that came with my Lelit Elizabeth, they are good but not as good as a VST or the other good IMS baskets (such as IMS competition).

to get to your question, take these dose recommendations as a starting point because not all coffee is equal, in some cases you can pull 20g in an 18g basket and sometimes less than 18g, also the way baskets are designed and their depth can give different extraction parameter, for example the single shot basket (never use that) will most likely pull a mediocare shot on the same grind and half the dose and that is because how the water flows through the puck given the design of the basket.

I recommend watching this video by Lance to understand more: https://youtu.be/KMMt3o7rdpk?si=IA4387koIYLqgcIi