Effective table visualization for KPI range comparisons

I was asked to visualize a set of quarterly KPIs for different companies. The main ask was to make a clear comparison between the companies, with respect to the range of the KPIs. Given the fairly high number of KPIs, I ended up going for a tabular approach, with small horizontal bullet graphs inside each table cell, using the Sparkline package in R. However, I quickly experiences that it was not straightforward to place Sparkline objects inside table cells.