SOLVED!! First, a huge THANK YOU to everyone here for all your time in helping me get this resolved!
My son-in-law gave me the following Dynex USB 2.0 hub along with the power adapter. This along with a USB-C to Mini-B Belkin cord and the oem Garmin cord did the trick. I did tests with the power adapter with and without it which worked either way. I'll probably just use the power from the MacBook Pro M1 making it one less cord to plug in.
This particular hub has been discontinued but, there are a few of these on eBay (link below) with one being new. I would say any 2.0 hub will do the trick just as long as it has 480Mbps for data.
I'm extremely happy with this getting me up and going but, I still feel the same about Garmin. They really need to get their act together and catch up with today's technology when it comes to Mac's. Even the newer units for example; Zumo XT and GarminDrive units as listed here are giving people fits;
https://support.garmin.com/en-US/?fa...396pKQK5vAeKD8
And Here:
https://support.garmin.com/en-US/?fa...uA3Fs1M7aSrGF7

Although not on that list, my 595LM is and has been checked on MTP Auto Detect sine day one. I did try the others with all three not being recognized during tests "without" this old 2.0 USB hub.
Anyway, I whined enough about Garmin.......
Once again, Thank You to everyone here for your help!! I sincerely appreciate it more than you'll ever know. I'm sure this thread will help others that found themselves in the same jam as I was.

Dynex 4 Port USB 2.0 Hub DX-4P2H
https://www.ebay.com/sch/i.html?_fro...8785_&device=c

Belkin F2CU034bt06-BLK 2.0 USB-C to Mini-B Cable
https://www.belkin.com/au/cables/cha...c/p/p-f2cu034/

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