@TanyaS58 you may find this Constellation 101 article useful Advanced Search – List Views vs Insights - its a good summary of the differences between using List Views (data page) and Insights (which is not technically sourced from a single datapage).
Reporting should really come from Explore Data and Insights - enabling that for your Design Time needs would also enable this for your business users, so its valuable for everyone. I’d highly recommend diving deeper into Explore Data. This might be helpful to you as well, Some insights into Insights (and Explore Data)
I am a big fan of Insights both for Design Time and end users. That said, there are times, an old fashioned Report Definition > Data page > List View are useful, so learning both and the differences will really help you on your Constellation journey.