Hello, I would like to ask you if you could correct my English. Thank you

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1)
-Weigh-in-motion DEVICES ARE a type of technology
or
-Weigh-in-motion devices IS A TYPE of technology
Also, a few more.
2) Commas after introductory phrases/clauses?
Here is a list of all the tasks you need to do /// Here, is a list of all the tasks you need to do
3) In this article (comma here?) we want to talk about the animals that inhabit our planet Earth. (introductory?)
4)The new McDonald's Sandwich is the grossest (comma here?) yet (the?) most delicious food we have ever had.
5)Please check that you have memorized all the pros and cons of this technique and (that?) you've written them down on a paper.
Thanks for your time and attention

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