do all of your toilets do this?

Try flushing using a bucket of water. Does it flush OK this way?

If not theres a clog, and it never hurts to run a toilet auger down the
trap.

If it flushes ok using a bucket does the water kinda swirl around
without much force?

hard water can clog the interior passages of the toilet and cause this.
the good news its easily fixed.

take off the tank lid, is the water level near the top of the dip tube
like it should be? does the water flow out well when flushed?

i am certain we can help after we find out a bit more