I remember a few years ago, at the Cuyahoga County Fairgrounds flea market that's held every weekend during the warm weather months, I picked up a tape (a JVC T-120) that had the same issue as your Tape 2 with the tape being all chewed up at the beginning. I haven't converted much of it yet. For the most part, it's a random mishmash of various cable programs (a lot of them incomplete) taped from a DirecTV receiver in September 2007, with a lot of channel flipping throughout. Various programs from MTV2 (Sucker Free, Wild N Out), BET (BET Live, Rap City, 106 & Park, Booty Call [1997 film]), Disney Channel (That's So Raven and maybe something else), Nickelodeon (Drake and Josh), etc. I think they also recorded one or two songs from one of the hip-hop stations on XM Satellite Radio when DirecTV simulcast many of the commercial-free music stations from that service. Of all the music videos that were found on the tape, the only one I really recognized was "Crank That Soulja Boy" and I think that was the part of the tape that was the most damaged.
No finds on my end this week. I did hit a couple of estate sales within the last couple of days, but the only home-recorded tapes I spotted at those sales were family home movies and obviously not for sale.
I found out there used to be a thrift store in Parma Heights called Thrift Nation that apparently sold recorded VHS tapes according to one of the reviews of it I read on Yelp. Unfortunately, it closed in 2014. A shame, too, because nowadays I'm in that Cleveland suburb on a regular basis anyway DJing for an Internet radio station in that area every week.
https://www.yelp.com/biz/thrift-nation-cleveland