Chartmat is an absolute delight.

I nearly refunded it because I couldn't figure it out in the first two instances, but once I did, it was a no brainer full stack.

Make sure you go to the docs sections and go over some of the tutorials as initially it can seem a bit overwhelming. But once you understand that all the options presented offer you a ton of customisation to get your charts in a whole palette, it gets very exciting.

Suggestions for the future:

1) Integrate GPT (akin to what Excel has done) Look into this, even if it means entering our own API key
2) Cname is a tad challenging, could be made easier and straightforward
3) Consider adding more templates.

For those of you who are looking for sample sheets to play around with, I found a good collection here - https://www.thespreadsheetguru.com/blog/sample-data

Get this deal. The limits in Tier 3 and above are beyond generous.
All the best!