As they're growing with Hostas they might well be bluebells. Easy to check by digging up a small clump. Prepare to go down up to six inches.

If the bulbs are white and come in irregular shapes - bluebells probably. They are highly efficient at colonising areas simply by sending out 'droppers' so flowering is not that important for them.

They might be Leucojum/snowflakes, which can be a bit cantankerous about flowering.

If you are mulching and feeding your Hostas then the bluebells (or many other bulbs) are probably lapping it up and turning mulch into their own luscious leaves. They need life to be lot harder before they'll flower. :-))

Yes - I agree that they are probably not daffodils. I would also guess at Spanish Bluebells, Hyacinthoides hispanica.