Whether the economy its better under Republicans or Democrats is not open to speculation.

If you’re not trying to create rage-bait, the answer lies in fact-based data which the World Wide Web, I’m sure, has readily available for your review.

Here’s the first result my search engine offered me:
https://en.wikipedia.org/wiki/U.S._economic_performance_by_presidential_party

Note that that link is a Wikipedia article. At the bottom, you’ll find the sources you’re looking for:
https://en.wikipedia.org/wiki/U.S._economic_performance_by_presidential_party#References

Here are a few more articles my search engine produced for me:

April 2024: https://www.epi.org/press/new-report-finds-that-the-economy-performs-better-under-democratic-presidential-administrations/

May 2022: https://newrepublic.com/article/166274/economy-record-republicans-vs-democrats

February 2021: https://www.newsweek.com/us-jobs-income-gdp-growth-startlingly-higher-under-democratic-presidents-analysis-1566313

September 2020: https://blogs.cfainstitute.org/investor/2020/09/08/republicans-or-democrats-who-is-better-for-the-economy/

June 2016: https://www.jec.senate.gov/public/_cache/files/309cc8e1-b971-45c6-ab52-29ffb1da9bf5/jec-fact-sheet---the-economy-under-democratic-vs.-republican-presidents-june-2016.pdf

July 2014: https://www.cbsnews.com/news/study-economy-grows-faster-under-democratic-presidents-than-republicans/