I know there was some confusion surrounding that card. It was corrected just after half time by the commentary team who said Towell hadn't been shown a yellow having earlier announcing he'd been booked for his goal celebration. Most match reports still show the yellow.
Apologies soccerbase had the incorrect information then. They've changed Baldocks but it still shows him with 5 yellows ( forest, Newcastle, Sheffield wed, Ipswich and Barnsley) I know the yellow against Newcastle doesn't count towards the total of yellow cards as he was sent off but there is...
I can only find last years FA hand book but it states on page 359
It's doesn't make any mentioned of 2 yellows or a straight red just if they've been sent from the field of play...
Second red card so the season always gets an extra game added to the ban. So it will be either a 2 game ban (2 yellows or a straight red for a professional foul)or 4 game ban if he's sent off for violent conduct.