Is it cheating to look up possible questions for outsourced online assessments?

I've had some OAs where I looked up the company and the possible questions they would ask and would practice whatever questions I found in the abyss before hand. Is this cheating? Because I'm hearing that it's cheating. Which is weird to me because leetcode has a section dedicated to past challenges from companies. People have testified to seeing questions they practiced come up in their OAs.