Equipment worth keeping?

I am only interested in EQUIPMENTS/GEARS, not materials or whatever...again, ONLY EQUIPMENTS.
And a little background: I plan to level all class/job, so I am keeping all kinds of equipments, in case I'll need them in the future.
I never level any gathering/crafting jobs yet...so I don't know much about those DoL and DoH...but I DO intend to level all DoL and DoH sometimes in the future.

Those items with BLUE backgrounds:
No question about these, I am keeping them whenever I found one.

Those items with GREEN backgrounds:
Right now I am also keeping all of them, because they are only obtainable from dungeon, and very dependent on RNG to obtain, if I discard one now, god knows when I'll get my hands on it again...so there's no doubt about this one.
But question nonetheless:
Q1) In terms of item-stat, can I get similar ones from crafting?
Q2) In terms of aesthetic/appearance, can I get similar ones from crafting?

Those items with PINK backgrounds:
How do I tell if those worth keeping or not?
So, same questions:
Q3) In terms of item-stat, can I get similar ones from crafting?
Q4) In terms of aesthetic/appearance, can I get similar ones from crafting?

Those items with GRAY backgrounds:
I am not sure what to do with them...
Q5) In terms of item-stat, can I get similar ones from crafting?
Q6) In terms of aesthetic/appearance, can I get similar ones from crafting?

As you can see, other than hoarding for possible practical-usage (leveling), I also wish to keep items for its appearance, in preparation for vanity slots, and possible role-play events. That's why make it so hard to decide if I should keep these items.

Stat-wise: character out-level items fairly quickly, so this is the least of my concern.
Appearance-wise: That's my problem...but as long as I can craft it eventually, I would rather don't waste the inventory space now. So I can make decision fairly easily as long as I know if I can craft items of similar appearance. Problem is: how do I know?

Please, share your method/advice/insight, thanks!