You would want to look at the ucore project. More specifically it is a variation of the Fedora CoreOS project. I also have interest in installing and using ucore for all the immutable benefits from bluefin but have been off put by the installation process. I don’t think the CoreOS installer uses anaconda for an installer so an Ignition file must be produced to do things like user creation, network setup, and filesystem layout. Since I just want to install ucore and forget about it, having to learn, create, and implement an ignition for a one off install seems like more work then it’s worth.
EDIT: reading through the uCore section of this form maybe you could just do a normal bluefin install and then rebase to uCore? This would allow you to use anaconda for first time set up and then roll along with uCore updates.