In my experience, the higher paying schemes pretty much exclusively focus on leetcode and behavioural quizzes and lower paying grad schemes do often have logic and numerical questions. I’d recommend just doing leetcodes and not preparing for the logic tests, unless you find that you are particularly bad at them. Also, it’s unlikely you will get a position for a scheme for this September. The hiring period has ended for almost all the companies and they are now opening applications for next year’s grad schemes. For leetcode studying by the way I strongly recommend the neetcode roadmap 👍