the original LEAD STATUS picklist with “open”, “not qualified” and “junk” vs. own pick list

the original LEAD STATUS picklist with “open”, “not qualified” and “junk” vs. own pick list

hello,
I have built a blueprint for lead processing, but used a separate “lead status field” for this.
Now I have noticed that the zoho original “lead status” field in the pick list properties still has “open” and “not qualified” and “junk” as status.

how are these 3 attributes used? is it “bad” if i don't have them in my own status pick list?

I would like to ask this before I continue working with it, because later the effort to change everything back to the supplied “lead status” picklist will be more complicated. 

i saw the advantage of having my own list in the fact that i have a dedicated status field for certain customers/target groups, which is then also the starting point for the appropriate blueprint. is it possible to do it this way or does this mean that i am missing out on opportunities?


thanks!