"I am using an outsourced payroll company"

Like this:

The Employee amount is no different than their share of their taxes.

The Employer amount is no different than your share of taxes. I don't know if you are managing this as liability, expense, some of each, or if your Provider manages this via "tax impound."

And the Employer 401(k) item, if the payroll service isn't including this, you don't need to, either. When you Pay it, it can be Expense. Or, you did accrue it first, so that makes it liability In and liability Out. Example:

Payroll results in you needing to send $3,000 of Employee funds to the 401(k) service + your own share as Expense. That works fine.