"excessively dramatic and Romantic black metal style".
Already mentioned several times, and rightfully so, but Avzhia's
The Key of Throne is the purest (and best) statement of this style. Not to put it above
In the Nightside Eclipse (although personally I listen to it more often), but the latter has other elements as well that also make it great. The Avzhia album is *only* "excessively dramatic and romantic."
For Graveland, I would put
Following the Voice of Blood and
Memory and Destiny closest to the style you're asking for, although neither is his best work - close to it, though.
Behemoth's
...From the Pagan Vastlands demo fits in the niche as well. So does
And the Forests Dream Eternally, although the cheese starts to outweigh the good - not terribly so, but enough to make it somewhat less good than the former.
Aeternus'
Beyond the Wandering Moon is good. Goes on too long for its own good, and is amateurish in parts, but sincere enough that you don't mind. After that they got steadily worse.
Setherial's
Nord... is good, but it only really has two standout tracks, the rest being merely OK.
Blazemth was a nice surprise for me, despite being some of the cheapest-sounding music I've heard.
Summoning fits the bill somewhat. Their music tends to be more harmonically- than melodically-focused, which makes it more ambient than dramatic at (many) times. I'd say
Stronghold comes closest to capturing this style, but it's far from their best.
Blut Aus Nord's
Ultima Thulee has a lot of this style in it as well, and is good. Everything else of theirs is best left avoided, though; the second album maintains the debut's style but loses its substance, and after that they just gave up and tacked on industrialist experimentation.
I wouldn't include the mentioned Abigor albums - they're all very good, but more in the vein of Mozart than Beethoven, whereas you're asking for Romantic stuff(additionally, I found the
Lux Devicta Est demo to be their best work). Same goes for Sammath.