I'm not sure if you even need the same class of stock as it is needing some assurance of the same liquidity rights as founders. If the company charter ensured that any secondary liquidity event would have equal participation between shareholders (including employee stock options) it would be a lot healthier and prevent this class of fraud.

It's such a garbage situation right now for employees, because even if you find product-market fit, you do the work and your company is successful you can still get dumped on by your founders taking secondaries and subsequently checking out of the company.