This link maybe useful

https://www.jclinepi.com/article/S0895-4356(15)00420-5/fulltext

There is no fixed form of Table of Contents; however, the table 1 is the most important content in meta-analysis, it should be well-organized and easily understood

If what you mean is the content of the studies you use for the meta-analysis, then It depends on the topic and type of studies you analyzed. You could look for meta-analysis with a similar topic (or at least a similar method). The most important thing is to properly address and covers the intended information in your review.

Thank you all for your replies!