Up until now I've been using https://www.dvdcompare.net/ to help label the individual files prior to converting them to MKV. I'm currently ripping Big Bang Theory Blu-Ray Complete Box Set and Dvd Compare had both the Episode Titles and precise Run Times for Seasons 1-7, and 9. Season 8, and 10-12 all have episode titles but no Run Times. The duration is what I use to identify which episode title matches to the correct file. In the rare times where the exact episode duration is listed more than once, I look at the opening scene and then describe it to AI to help with identification.
After searching around I discovered another website: https://thediscdb.com/ that also provides that info. Like Dvd Compare, it also lists both Movies and TV Shows. I'm sure the site's been noted before but it was never suggested the other times I made similar searches for help. Just thought I'd share another resource we have available when trying to identify and label our files.