Dark Knights of the Soul:

"Sorry Corpse555, Encyclopaedia Metallum was forced to reject your submission for the band Dark Knights of the Soul (United States), for the following reason:

Can you please provide more song samples for listening, preferably the entire release? The available music is ambiguous as to whether this is actually a metal band. If you don't have any more music available, consider posting about the band in this thread.

If you want to object to this rejection, please do so in the Band Appeals forum (read the rules thread first). Do not e-mail moderators directly about this. If you need help digging up more information about a band for your submission, you can try posting about it in this thread"

The songs I can provide are the ones listed on my original posting:
https://www.youtube.com/watch?v=vwMDYYEukyY
https://www.youtube.com/watch?v=CsCa9ajZWSk
https://darkknightsofthesoul.bandcamp.com/music
https://www.reverbnation.com/darkknights7

I can not provide a link to their debut album because they never renewed their distribution. However this was their old Spotify page with now "unplayable tracks":
https://open.spotify.com/album/1o5Sf8JfMzYEsP7jGVm3Lz

I can understand why this would be questioned regarding the ambiguity of their sound. Their main influences happen to be 70s / 80s Heavy Metal / doom metal, Megadeth, Metallica. Most of the 70s metal bands like Black Sabbath and such have had a lighter sound from what we're all used to by today's standard. Some of their softer tones can be compared to how currently Ghost (Ghost BC) write their music, they are listed on Metal Archives, however Ghost sound more like a hard rock band. Dark Knights... softer tones can also be compared to Black Sabbath "ballad-like" songs, such as "Fluff" or even "It's Alright". Their song "Dementia 2017 AD" has a sound that sounds like it's a mix of Black Sabbath (the song) and possibly even Megadeth (musically).

As far as what kinda bands they would be able to share the stage with, if this would matter, Black Label Society, Black Sabbath, Megadeth, Metallica, Dio / Heaven & Hell, Ghost, Twisted Sister, Deep Purple, (possibly) Yngwie Malmsteen. All bands listed are on Metal Archives.

As stated, needs more samples, so included your post in the Research Thread to the research list.
ThStealthP probably didn't notice that bit.