Tier 1
TPC Comments
Blue-Eyes shares the Tier 1 spot with Shinobird, with Loading... giving it the upperhand against other decks going First or Second. However, it will struggle against Shinobird if it doesn't open techs (especially going second). It can however prevent being OTK'd by Ritual Summoning from the GY (unless Shinobird is able to force it with Loading... ). Overall, Blue-Eyes is powerful and consistent enough to be Tier 1, being able to win against any deck (but might need help from techs against Shinobird specifically).
Shinobird is well-deserving of its Tier 1 Spot, with access to multiple tools and the ability to force three backrow and still be able to OTK, while forcing GY effects with Loading... (and most importantly has all the resources to do so reliably). Even if they go first it can establish backrow and Dweller, which will generally allow them to OTK on Turn 3. In my opinion, Shinobird is the deck to beat right now, with the resources to force anything and a specific line for any boardstate (aside from going second into Dragon's full combo).
Tier 2
TPC Comments
Rebecca Dragons are the perfect deck for going first: it's powerful, consistent and has the ability to play under Loading... with the Dragon Rulers. They can easily establisth a board with Loading... , Loading... , Loading... , and whatever backrow they draw into with Loading... . While their ability to play going second is weaker, they can still force backrow with cards like Voloferniges and Loading... (so theyre still able to play going second, especially if they draw into extension). When coupled with its near-impossible to break going first board, Dragons are more than capable of dealing with meta decks (and at worst have a 50:50 matchup).