They look like june beetles. They were either attracted to something there or perhaps they hatched there.

Your compost pile also looks really wet. It could just be a moment in time where it recently got wet but if it looks like that most of the time, you could add more browns to change the texture. Doing that can help get rid of some unwanted insects since they may like the previous condition that the pile was in.

They're about the size of the tip of a magic marker. Also, the compost is wet I've been adding urine in hope of speeding up the process.

If it has that kind of wet look from using a lot of urine, meaning there was quite a lot or urine or a lot of it used over time, I wonder if the urine is what is attracting them.

Any chance they are Chinese lady bugs? They look like American ones but instead of being red they are yellow/orange or gold. They swarm in the spring looking for warm places like the inside of a window - or a greenhouse?

Fairly harmless although they are an invasive species so I kill them given the opportunity. Also they will bite (mildly) unlike red lady bugs.

If it is to wet it is going to compost much slower. You may want to add some Dry browns to the mix like shredded paper or cardboard.