I can't say I would have checked massive amount of new stuff that came, but for example Archgoat album, didn't do much for me. Not bad, but like most thin and polished of their albums, musically replicating pretty much 100% what one can expect?
From good ones, even if I may be a bit biased, WARLOGHE and HELWETTI cd's has very very little of anyone competing their position of best things of year. MORGAL full length I first thought was too clean and nice, but with more listening, I got to say it has a lot of merit too. Especially as live band, they always triumph, but also for studio recordings, it is stuff that clearly is made to work live and it puts it to different category compared to a lot of BM.
Bone Awl "Obelisk..." CD and tape came out 2021, so I guess it qualifies pretty well for this years goodies too. I have always been fan of the good mediocre, no bullshit black metal. Stuff that can not be appreciated by all sorts of blackened this, blackened that crowd. In that category, for example new Shores of Ladon CD's, just work out well.
New Ride For Revenge, certainly went to top 2021 metal albums. Barely made it for this year, but immediately sounds like best RFR for years! Mooncitadel mCD/12", and Sirpinmurtaja CD from earlier 2021 still stand out. New Graveland was good, new Vothana is basically more the same category, but good album nevertheless. Sure more, but mentioned ones stood out in way that they are remembered at end of year summary, hah..