A lot of the names you mentioned have a lot of dimension and interest to me -- maybe it's their history or etymological connections to other names. The ones that feel plainest to my ear are names that were trendy for a moment in time and became really tied to a 'basic' vibe for a particular period.
Ellie,
Lauren,
Alyssa,
Katie,
Jen,
Madison,
StephanieKevin,
Logan,
Kyle,
Chad,
Justin,
Tyler,
Brian