Galaxy distribution, compare fields?

There is no simple answer to your question, but here goes:

1 Of course, there are major differences in the matter density of the observable universe. These include the galaxy clusters we have known about for the best part of a century, and the 'sheets' and voids' of galaxies which are a more recent discovery. However, on average, the observable universe is uniformly isotropic (the same in all directions).

2 That doesn't mean that the Hubble deep field looks like near space, because we are looking at the edges of the observable universe as they were 13bn years ago, before much of the expansion of the universe. That's why the observable universe has a radius of around 49bn light years, compared with 13bn light years when that left the most distant galaxies. In other words, the deep field looks more concentrated, because it is much, much older.

Many scientists agree that galaxies are distributed in a manner that is weird to fully understand. If you could look at them in miniature, you would see a sponge-like structure. Let's say a sponge with wide holes, like the ones you would dive for to collect from the bottom of the sea. So there are small holes, big holes, but all connected by filaments to give the state of a sponge. Now you can have an idea that there are big galaxies and small galaxies "connected" (but of course at great distances), but between them are large empty spaces (just like a sponge...no more ...no less.)

Situated where we are (about 0.3 distance from the centre to the periphery in an average galaxy) our vision is very restricted (with the disc & with the nucleus a blind spot that obscures the part of galaxy beyond), that is inadequate to arrive at a meaningful conclusion regarding distribution of galaxies.

Perhaps because of this that we see (& count) closely packed fields of galaxies in the vicinity of galactic poles (Virgo cluster & in Fornax).

No - the universe is homogeneous and isotropic