As for the various types of gloves... and this from the perspective of a former Navy Hospital Corpsman...
Latex:
a. Come in many glove sizes (6-1/2 ~ 10-1/2)
b. Once you find "your" size, they fit very well
c. Some people are highly allergic to the latex proteins
d. A certain size from company "A" will normally match the same size from company "B".
e. Can be found in many medical supply stores, pharmacies, etc.
Vinyl:
a. Sometimes come in "universal" sizes, e.g., XS, S, M, L, XL (often just S, M, and L)
b. The "medium" size from company "A" often fits totally different than the "same" size from company "B".
c. Fingers are often poorly designed, sloppy, and don’t support fine work.
d. Disposables are unilateral, i.e., no well-defined thumb.
Nitrile:
a. “Purple” gloves by various manufacturers are sometimes available in numbered sizes, often only in S, M, and L.
b. Fit better than vinyl; usually not quite as well as latex.
c. More expensive than latex or vinyl (but per-pair cost is slowly declining as more companies jump on the “No latex” bandwagon.)
Generally, getting “Exam” (examination) gloves are less expensive than Sterile gloves.
I only wear gloves when moving stock. NEVER around moving machinery.
I kept swarf brushes on hooks near the power switch as a reminder to power down before using the brush.
Regards to all.