I need help identifying this lot of Hungarian Medieval Coins (prob. Sigismund)

I need help identifying these coins and their varieties from each. I think there are 2 Denars and ¼ Denar. I think they are coins minted during the reign of Sigismund of Luxemburg.

¼  Denar

1 Denar

1 Denar

I bought these a few days ago and I want some information about their type and variety.

As you can see, they were struck off-center, but the quality is still great in my opinion.

¼ denar: N#48166

The denars are one of these:
N#46913
N#51202

1. The ¼ Denar is piedfort or not?

2. What is the denars variety?

Piedfort means that the coin is struck on a thicker and heavier flan. That is hard to assess while it's in a plastic.

Your first denar is the type of the first link (with the bigger cross that intersects the lettering). There are 2 dots around the coat of arms, so it's probably the ÉH#449d subtype.

The second denar is the same type ( the top of the cross cuts into the letering). I can't see any mintmarks, so it's probably the basetype ÉH#449a. But half of the coin is missing, so I can't be certain.

Ok, thank you for the information, but how do I identify if it is Piedford or standard?

If you check the page of the piedfort, that only lists one variation, with B - n mintmark. I'm not sure, if this is an exhaustive list, or someone just uploaded that single variation.
On the normal page, there are much more mintmarks. Yours seems to be the Ω-L variation (ÉH#456nn subtype), which heavily suggests that yours is not piedfort.
If you want to be sure, pick it out from the plastic wraps and measure it on a precision scale. Then you'll see if it's closer to the normal one or the piedfort.