A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Greetings,
Thank you for taking the time to share your feedback. I completely understand why having more visual customization options would be helpful, especially when you're working with ranking or tier systems on a mobile device where screen space is limited.
At the moment, Excel for mobile supports viewing many conditional formatting rules, including color scales and data bars. However, some advanced formatting and customization capabilities available in Excel for Windows, Mac, or the web are not currently available in the mobile app. Based on the features documented for Excel for iPhone, there is currently no option to create a custom full-cell horizontal gradient or a "granite-style" smooth fade effect that transitions across an entire cell.
You can review the currently supported feature set for Excel on iPhone here: Excel for iPhone features | Microsoft Support
I would suggest, if you have access to Excel on the desktop or web, you may be able to create more advanced conditional formatting rules there and then view the results on your mobile device. Excel mobile will generally display supported conditional formatting that was created elsewhere, although editing options may be more limited on mobile devices.
Kindly share your feedback on feedback hub by pressing the Windows key + F on your PC. This will launch the app, and you can submit your ideas and suggestions from there for Microsoft to consider this request.