I don’t know what resources you’re asking for. If guys are getting grief for taking parental leave, that’s a company culture thing. But FYI “legally protected paternity leave” isn’t exactly true.
Taking state Paid Family Leave doesn’t mean your job is protected, it’s just claiming money from the benefit program you’re obligated to pay into as a taxpayer in [state], when you take unpaid leave from work.
That’s true for people who gave birth in most states too – PFL doesn’t protect your job like FMLA or disability leave does. It’s purely to supplement your income.
Also pregnany is a protected class. Parenthood is not.