Help with identifying a few trees during winter

I recently moved to a new place and I am trying to identify 5 of the trees on the property. I am trying to make a plan for spring. I want to remove and replace a few things that are not really beneficial to my plan. I have taken some pictures of the trees I am trying to identify. These are in Mapleton Utah. It is early January right now.

This one is a thick heavy vining type tree with lots of thick green leaves and a yellow-ish 5 part seed pods with red seeds.
We will call this tree #1. (Edit: this one is Euonymus species- wintercreeper)

This will be tree #2.

Tree #3

Tree #4

Tree #5

#1 is a Euonymus species - the seed is very distinctive.

Phil Gardener wrote:#1 is a Euonymus species - the seed is very distinctive.

Thanks Phil, after further investigation it looks like it is the wintercreeper variety.  

Tree #3 might be an Apple. There are about 30 other apple trees on this property and this looks a little different then any of them.

Does anyone think Tree #4 could be a Mulberry?

#4 is a mulberry, the trunk bark and dried fruits are the giveaway.

#3 looks like a member of the prunus family perhaps a plum or pear