If you are level 9 already, you can pretty much turn off yellow items in the loot filter.
There is almost no item you’d want to use, that’s yellow.
Items in GD can be “normal” base items or “monster infrequent” items (MIs).
The normal items are the ones that can be yellow in the filter, if they have two common magic affixes. After level 10 or so, they stop being useful, as you will always find plenty of rares with better stats, resistances etc.
The monster infrequent ones are always shown in green, but also marked with a symbol next to their name (a little gem).
So even if you filter out all “magic” yellows, you will never miss out on MIs.
They have a lot of bonus stats, even if the skill bonus isn’t useful for your build.
If you want to know what affixes are useful for pets, you can use Grimtools and search for “pets”, filter out blue and purple rarity - and then scroll down to the affixes.