They aren't included in any pass, because they aren't run by public companies. Therefore, you can DIY easily buying online the entrances at the respective websites.
Thank You very much for your advice. Carol.
Passes are not recommended as they are rarely worthwhile.
If you want to, after planing your itinerary you can check the different options to see which includes what and if it's worthwhile for you but even if you'll end up saving a few Euros I'm not sure it's worth the trouble of checking and comparing all the options.
There is card, apart from the Articket, that include the Picasso museum (the Barcelona Card) andone that includes Sagrada Familia (Barcelona City Pass) but in the end non of them will be worthwhile as you'll most likely end up paying more.
The mentioned Articket is worthwhile if you'll visit at least 3fo the 6 museums when at least two of them are main, more expensive one and if you're not entitled for a discount (senior, disability, youth, student - depending on the museum).