Going thru
iyashikei-list at tvtropes does seem to have have familiar series. It probably is small but looks good for start.
Some what I have seen/read from there:
Aiura Ah! My Goddess -- (I guess it can go to this genre. Manga is total spacehogger in shelve.)
AQUA/ARIA -- (Those art books are great.)
Azumanga Binchou-tan -- (Everyday life of Binchou-tan and her friends, short 10 minute episodes and 4koma manga, good)
Golden Sky Stories -- (Japanese tabletop RPG that focuses non-violent role-playing one of few tabletop RPG that's been translated.)
Haibane Renmei Hidamari Sketch Is the Order a Rabbit? -- (This seems to go to "cute girls doing cute things"-category that seems to be a thing in iyashikei. Good series and manga is nice too.)
K-On! -- (More "cute girls doing cute things".)
Non Non Biyori Sketchbook Yokohama Kaidashi Kikou (10/10, would/(need to) read again)
Yotsuba&! Some series found elsewhere:
Kokoro Toshokan (Anime & Manga both are good. Manga consist from short 5-7 page long story chapters while anime did have 1 story/episode. Can't remember right because it's so long since I watched it.)
(Dohh, needed some edit)