Unknown beings!?

[Ulvenok]

'...brownies, fays, pixies, leprawns, and what else are they not called, for their number is very great... they were born before the world and are older than its oldest, and are not of it, but laugh at it much...'
The Book of Lost Tales, Part I, III The Coming of the Valar and the Building of Valinor

These are beings not explored by Tolkien, unknown by most maybe even the Valas. Ungoliant is clearly such a being and she could take on Melkor the most powerful of the Valas! "They were born before the world and are older than it's oldest, and are not of it, but laugh at it much", that sounds so much like Tom Bombadil he can't be anything but just that.

The one ring had no power over Tom just like Melkor had no power over Ungoliant. If Ungoliant is Tom's equal one can't help but to wonder the extent of Tom's actual power. Would he be able to contest with the powers of the world? Evidently there are many such creatures, brownies, fays, pixies, leprawns. Goldberry could very well be of their kind too. Also Gandalf mentions there being strange creatures gnawing at the root of the mountain. Gnawing is a direct reference by Tolkien to Níðhöggr.

Níðhöggr is a being which gnaws one of the three roots of Yggdrasill. It is sometimes believed that the roots are trapping the beast from the world. This root is placed over Niflheimr and Níðhöggr gnaws it from beneath.

So these creatures including Tom entered the world before the great powers, are not of it but are they of Eru? It seems odd that Eru would create "many" spirits equal to Melkor in power and place them in the world. This reminds me of when the silmarillion talks of the ents it says that Eru grabbed spirits from afar or something close to that. Is it possible that Tom, Goldberry, Ungoliant and beings of their kind answer to no one because there is nobody for them to answer to?

If that is true then how powerful would one rate a:

• Pixie
• Leprawn
• Brownie
• Fay
• Tom
• Goldberry
• Ungoliant
• Gnawing creature

and all the other unknown beings that has settled in Arda. Tolkien also said that one of the reasons he chose to include Tom in the story is to show that there are beings that are wholly unconcerned with what is going on in the world. Tom played with the ring as if was nothing, he made it dissapear, he wore it without being affected by it. He did not want it, yet was a bit curious about this "precious ring". Of course it's not precious to him, that was said in a sarcastic manner. What do you people think, what of these unknown beings?