Naming names of a particular yeshiva is tricky, because we each have a different definition of what “yeshivish / heimish ” is.
Do what we did. Go to the 4 schools that 4th-5th grade kids in your shul go to, and see what the landscape looks like.
See who does the pick up on Sundays at dismissal time. We found that to be VERY indicative of the flavor, and by checking out the older grades, you can get an idea of what you can expect down the road.