I had the same idea for a while but over the months I noticed the ones with the smiley face did better.
I think it depends on the niche you’re targeting, different markets have different ways of reacting to things. For example, if I was going after more enterprisey people (i.e wearing suit in profile picture) I’d change it up and would remove the smiley face.
Sure here you go https://gist.github.com/mohdabdin/804dc17ac1e064c28b2860cf2c37dbb1