To do Alt + h l d on Mac in Excel, download and install Accelerator Keys, then press Option, followed by h, l, d.
Command: Data Bars
This is how to do Alt + h l d on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + h l d adds gradient or solid data bars to cells that visually represent their values. Longer bars indicate larger values.