I understand that item level determines where an item can drop (act/difficulty) and what affixes it can have, but I am having trouble finding information that clearly states the following:
-
The earliest act/difficulty where you can find each item level, and
-
The item levels for each range of each affix.
For the former, I have only found information about ilvl 60 – 63 but I would like information for all item levels. For the latter I have only found this page linked on another question, but it's not clear where each "tier" of affix can drop.
Best Answer
For your first question (item/monster levels), I came across a chart someone made to illustrate experience gain, but which can be applied to this as well.
Chart
Source thread on reddit by "Malloy626"
Basically, the cells marked as 100% will be the min, mid and max monster levels in each Act. I doubt all the data is entirely correct, but it gives a good indication on what maximum item levels to expect.