You may be over thinking it.
It is a common thing to do, to put the details on the dotted line, to the left of line 8 (of Schedule 1), titled "List type and amount'. The IRS only goes by the amount on the right hand part of line 8.
But it would have been better had you just put: W2G 5500, Non W2G gambling 2500 and left off the Gambling 8000.
