If you are seeing their collar, then they are much too shallow.

I would allow the foliage time to wither and yellow some, and then reset them.

Additionally, if the bulbs have become crowded in the hole, they have divided, and grown 'smaller' and the result would be foliage with few (if any) blooms. When resetting, avoid crowding them in the hole, and allow some room between the bulbs, especially the daffs.
I don't think the crocus mind near as badly being crowded, but I 'could' be wrong.

Sue

You didn´t mention if you chilled the bulbs or not, the zone may not have enough cold period.

Bulbs purchased from non specialized bulb sources are not prechilled, you have to do the chilling ( 8-12 weeks ), if you want pre chilled bulbs for warmer climates you have to order them from a specialized bub source like John Scheepers. When you order from them they ship the bulbs until they are chilled in their facilities to perform otherwise the result is that most bulbs do not bloom. A good thumb of rule is: plant twice as deep as the bulb is tall.

What chemocurl says it right on.

Zone 7 NYC is fine for a chilling period. If planted in the fall, there's no need for additional chilling.

My Home Depot daffodil bulbs have done amazingly well -- as well or better than those from respected online sources.

You said these were purchased a few years ago. The first thing that came to me was if you might have cut the foliage down before it died back on it's own in previous years?
If that is the case, it would explain no flowers. The bulbs build up what they need for future flowers from the leaves. So you have to let them turn yellow before you can cut the foliage back.

Just an idea.

Joy (pnwjoy)