There are 100's of named Hosta's.
Flower colour, size etc are all needed to be accurate with an id.
So this is just a suggestion...based on the wavy leaf./variegation.
Hosta undulata var undulata...a very old Hosta.
Quote from link...."H. undulata var. undulata is a compact herbaceous perennial with ovate, strongly twisted, rich green leaves 15cm in length, each with a large central zone of creamy-white. Funnel-shaped light purple flowers are borne on stems to 75cm from early summer"