No, you aren't middle class. Not by any appreciable metric. Your gross income is 8X the average HH income. According to https://dqydj.com/average-median-top-household-income-percentiles/ and even your own admission, you are in the top 1% of earners. You saved $150K last year, which is twice the national HH income.

And I'm sure all those people 'driving Lucids around Manhattan Beach' say the same thing you did: "It's hard for me to classify myself as upper class when I only have a Gulfstream 4. It's not like I have two G800's like some of the so-and-so's I see at the private hangar."