Has anyone figured out how to do actual time reporting (by assignee) using portfolios in the x axis instead of projects?

Hey Rachel, I hope this can help you.

So I created charts and I select “Time added by”, with this, and any other filter you may need depending on what you want to see in your charts, you get to see the total time added by the one that tracked time in tasks:

For example I have my own historial time report, and I use “Time added by” in the filter, and I use months for x-axis and actual time in y-axis, with this I can see my line to compare each month the time I’ve tracked and measure my high and low work seasons (been using this chart since last year).

Hope this helps you.