I know none of these and I'm getting bored of so many internet reviews, BUT you may be interested in Notes Reviews (likable guy with tons of prog rock reviews) and MercurytoHell's YT channel Kaboom! Review:
Well, not quite:) many of these are not obscure and many of them are not Black Metal either. Nonetheless, most of these guys are from US and I have put next to their name bands/albums I know they enjoy (and I also do).
Yeap, he was one of the first guys. Then followed Coverkillernation and Countblagorath then these fellows above (plus others I don't like that much or maybe forgotten about)
