While technically a better term for assets than income, we'll continue to use "wealthy".
You should realize that multiple things can be wealthy.
$380k is wealthy and $20M is also wealthy. $20M is wealthier than $380k.
Im the US, an income of $380k is the 99th percentile.
In a higher COL state of California, an income of $380k is still in the 99th percentile.
And for the very high COL city of San Francisco, an income of $380k is still just about the 99th percentile
If a person is making $380k, regardless of what they may believe, they are absolutely not middle class in any way shape or form. They are "wealthy".