So, I decided to choose a new kernel for update, and found that there are several kernels in our rep here Index of /repositories/Kernel:/HEAD/openSUSE_Factory/x86_64

So, can anybody tell me the difference between these kernels:
kernel-default
kernel-desktop(this one i installed on my laptop)
kernel-ec2
kernel-rt
kernel-syms
kernel-trace
kernel-vanilla
kernel-xen
kernel-kmp

any info will be highly appreciated.