I have scored 73 this year. I used two books.
1- Mian Shafique's book by jwt
2- KIPS academy book not notes
3- Most important thing past papers
If someone want to go further:
1- They can practice more from analytical ability book of caravan publishers. I think link of its soft form has been previously shared by someone on this forum last year.
2- They can take diagrams, flow charts, graphs, maps etc from google chacha to make their theoretical answers even better.
3- Basic mathematics of 8th, 9th and 10th class if someone has time. Concepts other than above two books only and within limit of syllabus.
4- Get a good GK MCQ book if you can but according to syllabus not any random one.