Here's how to download smaller resolutions

[S7venLights]

I had a look at YTDLP format examples and came up with the below yt-dlp.conf
It will download no more than 1080p for vertical or horizontal videos or the next best resolution if 1080p doesn't exist. (I just edited line 6)

---

-i
-o "%(uploader)s (%(uploader_id)s)/%(upload_date)s - %(title)s - (%(duration)ss) [%(resolution)s] [%(id)s].%(ext)s"

# Archive Settings
--download-archive yt-dlp-archive.txt
-S "res:1080" yt-dlp-channels.txt

# Uniform Format
--prefer-ffmpeg
--merge-output-format mkv

# Get All Subs to SRT
--write-sub
--all-subs
--convert-subs srt

# Get metadata
--add-metadata
--write-description
--write-thumbnail

# Debug
-v

One can also make a separate .sh, channels and archive files for each resolution and have them point to each other, and in doing so have different channels download in different resolutions.