hallowed is the internal release group at MTV. Their aim is to produce highly streamable (think Plex/Jellyfin) but still high quality encodes. They also always include English subs and dual audio for foreign films. The quality of their releases are good but very few as they only started releasing under that name about 5 months ago.
However, if you are gunning for highest possible quality/bitrate (and file size) you can get, go with releases by CtrlHD, MainFrame or W4NK3R.