logo plugins

“You have to understand how confusing is your request to us. Illustrator does provide all the creation tools at hand.”

^^^ This 100%. As a tool, Illustrator is more than sufficient for creating logo artworks.

What Illustrator won’t do is design good logos. OP has to learn how do that for themselves. That means learning basic graphic design principles (typography, color theory, grid layout, etc); studying existing logos to understand what makes them good or bad; and then practice, practice, practice.

Since OP talks about “gradient, fillet, etc,” I can’t help but remember this horror, so will repeat just what I said there. Here’s a couple good logo design how-tos:

https://www.feelingpeaky.com/5-principles-of-logo-design

https://99designs.co.uk/blog/logo-branding/principles-of-logo-design

And here’s a good how-not-to, as understanding what makes a logo design bad is also important:

https://blog.hubspot.com/insiders/logo-design-tips

You mean tools inside Illustrator?

Depending on how you want the logo to look, pretty much any tool can be used. Maybe excluding the graph tools, but who knows what people design.

Having taught the process of creating logos to adult students in a graphic design program, I don't believe any automated process like that will produce a good, appropriate and original logo. 

Not only does a logo need to be appropriate to the business or organization, but it also must function effectively in various environments where it may potentially be viewed -various kinds of electronic screens or anything from a business card to a high rise pylon sign. Every business or organization has different needs and the brand identity must be tailored to that. Every medium where the logo would be reproduced (in print, on electronic screens or outdoors on signs and billboards) has issues to consider like color and material standards or limitations in those mediums. The process may be somewhat simple for a small business with one shop. Creating a new brand identity for a large organization can be a really big project.