As already said, 16 gauge, but I think it will be hard to find a 70-30 sink in a 16 gauge. Elkay makes the only one I know which is your second link. Elkay a good midwestern company been around for a hundred years. I would also look into the Kraus sinks, though their 16 gauge sinks do not appear to come in a 70-30 configuration. But Kraus is a lot of bang for the buck, and many happy customers.
Your first link shows a top-mount sink, not an undermount sink.
With respect to the comment above by @Sabrina Alfin about the pitch of the sink, that issue is more common in the sinks with "0-radius corners", meaning the corners are sharp 90-degree angles. It does occur at times with single-bowl sinks that do not have 0-radius corners. However, you are looking at a 70-30 sink, so that even the larger 70% side is small enough that the pitch should not be an issue. You should look for corners that are called "tight radius corners" which are 10-15-degree corners.
"there are certain brands that scratch easily etc - so all stainless steel sinks are not equal?"
With respect to scratches, all stainless steel sinks scratch, whether it's a $300 sink or a $3,000 sink. You can reduce the amount of scratches with a sink grid, though the grid will not prevent scratches entirely. Or, what many people do is not care about the scratches, and within a couple of months the scratches become a patina that you do not notice. But if you truly do not want scratches in your sink, then stainless steel is not for you, and you should look for another sink material like enameled cast iron or a granite composite like Blanco Silgranit.
"i love being able to have one for dishes and one for garbage disposal while cutting veggies!"
Everyone works differently in their kitchens, but I used to hate having a 2-bowl sink while cutting veggies, peeling apples, or rinsing anything with debris. That is because the sink side that does not have the disposal either gets its strainer full and slimy in no time, or debris goes down that drain that ends up clogging the sink (that ol' dirty water bubbling up from the drain that does not have the disposal is a sight I never wanted to see again). With a single-bowl sink, there is one drain and its disposal takes care of whatever prepping or rinsing you are doing.
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maybe not quite this - but i like a pot rack that is round and has character
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