Asking advice for choosing Keymap. What's considered the most default one?

Hello community,

My background:

• Never used any JetBrains tools before. I know nothing about the Rider user community.

• Been using VSCode and Sublime Text for many years. I use shortcuts a lot.

• I do Unity C# development mainly.

I just started to use Rider. The first thing it asked me is to choose a "Keyboard Scheme". And this is where I am having questions. I am not sure which one to choose. Most of the time when I am learning a new tool, I kind of want to use the way it is naturally (if not too difficult, of course). For example when I'm learning Blender, I use the default Keymap instead of the Industry Compatible one. I'll list my questions below.

Question 1: What's considered the most native/default Keymap of Rider, if there is one?

I see there are IntelliJ and ReSharper. I know nothing about them but I know they are JetBrains's products. I am guessing IntelliJ is the most "default" one since it's listed as the first?

Question 2: If a person without any background starts to learn Rider, what's the recommended Keymap?

This is similar to the previous question. I simply want to know what's considered the most default one. Or what's the most recommended one.

Question 3: From the screenshot I post, you can see that I am using VSCode Keymap now. Is there any disadvantage for me to do so? For example, will I find most of the articles on the web, or videos on YouTube, using different Keymap than me? Or is this not a problem at all?

Thank you.