I have noticed that when running maps I seem to find way more white items, even without monster difficulty. Is it just me?

Never noticed.

I feel like I find more comfreys when running a map

also feel like i find way more fishing rods when you run a beach map

That sounds interesting. That would mean that in volcano maps you would find more fire charms, in mountain maps you would find more ice charms etc.

I have noticed this yes.

I refer to it as wanting to (be in map) at the very least when climbing solo

big if true

I will do some more maps later and see if I notice it still, maybe it depends on the type of map?