You mention that Excel is used by non-technical people,/( which is a generalisation), and then I see many comments on HN seeking clarification. It seems to be a complex product. What's the target market?
It sounds like your product is in the same space (multidimensional modeling) and the market is likely an overlapping one. I looked at Quantrix Modeler some time ago as an Excel replacement for complex multiparty reporting, and was impressed by it.
Also, Gartner considers these class of products to be in the CPM space. Take a look at this for the products you'd be in competition with [1]. These are more tailored toward financial and business reporting, but the underlying foundation for all of them are similar: they all use multidimensional modeling engines.
[1] https://www.adaptiveinsights.com/sites/default/files/gartner...