Can I cross-reference regex groups from the title field to the artist field?

[FichteFoll]

The youtube account https://www.youtube.com/@Vanguard-Sound has a lot of songs where they use the titles like 【Polyblue】Exorcism「Punishing: Gray Raven OST - 烬海异途」 【パニシング:グレイレイヴン】Official (link).

As you can see, currently, Web Scrobbler maps all of these to "Official" by "Vanguard Studio", which is all kinds of wrong. It is unclear who exactly is supposed to be the artist of this track ("Polyblue" or "Vanguard Studio"), but from my experience with MusicBrainz I'd like to match this to the following:

Video title: 【Polyblue】Exorcism「Punishing: Gray Raven OST - 烬海异途」 【パニシング:グレイレイヴン】Official
Track: Exorcism
Artist: Polyblue
Album artist: Vanguard Sound
Album: Punishing: Gray Raven OST - 烬海异途 (not sure if this is really the "album", so I think I'd be okay with omitting it for now)

Since the title format is consistent, I'd prefer to add a regular expression rule for all of these tracks instead of providing an override for each track individually. However, I am entirely unsure how to approach this problem because first of all it seems that Web Scrobbler has already stripped all of the necessary information from the title, and secondly, I can't tell whether or how I can cross-reference matches from the title field to other fields.