The G-Drive would be my choice; in fact, I've got a couple of them! Initially I had bought one back in 2016 in order to have the two cables, the USB-C to USB-C one plus a USB-C to USB-A one, since I had just bought the 12" MacBook. I liked it immediately because by simply swapping cables I could use the device with my 2015 15" MBP and the 2016 12" MacBook. Also, and this was the bigger reason, I could use the USB-C to USB-C cable with my Samsung T1 external SSD, as that had only come with a USB-a cable. The speedy little T1 worked wonderfully for also swapping files and folders between the machines, much more quickly. I also noticed that the G-Drive, even though not an SSD, seemed to be a bit faster than my colorful My Passport drives, too. I picked up another one a while back and both of them are in use for different purposes.
The G-Drive, at least when purchased at the Apple store, comes already formatted for the Mac -- not that it's all that big of a deal to reformat if need be.
Years ago I did use and still have a couple of the Rugged LaCie drives ( used one the other day and it is still working just fine!) and they are excellent for travel because of their sturdiness. They accompanied me on several photography-oriented trips. Haven't tried one of the more recent USB-C models, though. I would guess that you would not be disappointed with whichever you choose.
I am in the process now of gradually shifting most of my current backup activity to external SSDs, and am using Samsung's T1, T3 and T5 drives for this purpose, putting my archived folders and files on to my older, slower external HDs. However, external SSDs are significantly more expensive and may not be what you need or want right now.
In summary: G-Drive first choice, LaCie Rugged second choice, but both should serve you well.