Under the hood of Economist/YouGov polls & found that Trump's net favorability has risen the most among the following subgroups since Feb 2021:

Black (45-pt gain)
Age 18-29 (+40)
Hispanic (+27)
$100K+ (+27)
Moderate (+22)
<$50K (+20)
Liberal (+19)
Democrat (+17)
https://pbs.twimg.com/media/GHWZVioWQAALKwC?format=png&name=large