0.4mm Pilot Trusty is one of my favorites—absolutely love the 2mm tip + matte black nose cone.
Is the lower one (silver or white) a pen or pencil?
That Colleen, wow!
Isn’t it a Wörther pen?
I can provide a few mercari links this time as well. Thankfully this one is cheaper than the PWP15 
https://jp.mercari.com/item/m79914325804
https://jp.mercari.com/item/m90012678831
I swear that I also saw a black one recently but I can’t find it…
Yes, it’s a solid and cool pencil. Only 0.4 mm comes in this finish? I have they Trusty 0.5 which looks totally different…
It’s an old Muji needle point pen which I acquired some time ago.
Yes, a nice one. I don’t know if Colleen did it intentionally. They edges is very sharp which will give you a strong feeling when holding it. I like it BTW:)
The 0.5 has colored plastic accents and just seems cheaper, but I think that’s mostly because the 0.4 has the matte black finish that gives a Batman-like quality advantage.
What type of pencil is the middle one? 
That’s an Itoya Helvetica, perhaps my favorite pencil with a Schmidt mechanism. These pencils are surprisingly hefty and quite comfortable to use.