Budz, I invited you to come and take pictures, what? Isn't worth it to you?
Well , let’s unpack
your thread …..
You ask “ anyone ever see
this ? ” and not actually show it. So what is the purpose of the question without a pic ?
Sure there are tripoloid / tri-leaf / mutations / “ freakshow - creeper “ strains but usually a pic would help identify it.
‘However , the actual issue of having 3 cotyledons is nothing special.
Here I made a diagram of your possible seedling to illustrate , for those waiting with baited breath.