Tooltip on line chart

I have a line chart and the tooltip that comes up when you hover over a point I want to edit. I saw someone ask in October of last year but I have not seen any updates. I am moving from Tableau to Looker and that was a big part of my charts one total line but top n in the tool tip.

Any information would be great.

I know you can customize tooltips in Looker, but I don’t think there’s much you can do to customize tooltips in Looker Studio.