Upfront widget element presents multiple widget/plugin names

I hope you are well today.

When I create a new widget element it presents a list of plugins and other widgets. Some of these show in the list 4 or 5 times.

Why is this ? Which one do I choose? Does it matter?

For the WPMU mailchimp widget, it shows at least 4 and they are numbered 1, 3, 4, 7 (or something like that). Is there a difference between them?

Please see the attached screen capture. You're welcome to use support access for more info.