Yellow – while yellow decks control the board early on, they don’t usually play any problematic card in the security, so you can usually push for game with the combo. The way to play against yellow with this deck is to let them push out first so you can attack their digimon even if it is unsuspended because of Zeekgreymon’s inheritable.
Black – this deck is a bit faster than most of the black decks in the format, the only problematic build in my opinion is the Diaboromon deck as Armageddemon can shut down the whole focus of the deck since it locks down level 7 digimons effects.
Blue – against blue, you need to accept the fact that they will damage your security early, but you can control the board with Shoutmon DX and Zeekgreymon.
Green – green is a bit nerfed in this format so you can patiently wait for the opportunity to attack.
In the match up sections for yellow, you talk about attacking unsuspended digimon using zeekgreymons inheritable effect. That effect only works if you are using blitz, which this deck doesn't actually make sue of.