My own personal take on these questions is to avoid anything cliche or overly current. I start this by saying that by doing either of what I mentioned to avoid, you are not doing the 'wrong' thing. They are absolutely fine to do. And, if those are what you are comfortable dealing with, then stick to it
However, I feel that in the sea of applicants you want to stand out. Thus, at a time like this, can bet that almost all applicants are talking about the same 3/4 issues. So, in order to stand out, I chose to take on a lesser-known topic. Also, it was great to learn about an upskill my commercial knowledge as I had no clue about it before. I can assure you, in interview, when it came to discussing this topic, the interviewer's eyes lit up and they were immediately engaged. I could tell they were probably fed up of hearing about AI and FinTech!
Just my 2p.
As mentioned above, they are fairly consistent. Do lots of practise tests with the same provider and you'll come across the same questions!