[StoneAndSky]

It exists: XMAG https://finance.yahoo.com/quote/XMAG/

> The index aims to provide a comprehensive and balanced representation of the U.S. equity market by including the largest 500 publicly traded equity securities, while specifically excluding the seven largest technology companies commonly referred to as the “Magnificent 7”.

Up 12% in the last year. Unfortunately, it's ten times as expensive (0.35%) as a straight S&P 500 ETF (e.g. VOO, 0.03%).