Answer: You may be seeing a variety of ornamental grasses such as Little Bunny fountain grass (Pennisetum alopecuroides 'Little Bunny') or one of the many grasses listed with photos at the following web page by the University of Illinois extension. You may need to cut and paste the complete url into your browser to make it work correctly.
Your local professional nursery staff should be able to show you a selection of these. I hope this helps.
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