I feel I know exactly what you mean when you like the idea of clean, uncluttered spaces but already know "a tiny house" is just too small.
I have fallen in love with the earth friendly homes; cob, earth berm, earthbag, Paul's wofati. I love the umbrella house.
Something I heard in the recent past on the size you may be considering that helps in looking up that size of home is the word "bungalow". I have even heard the word to describe a home on a property that allowed it to escape code laws.
I have always been a bit of a hacker when it comes to search engines, discovering things that most people just don't find. While considering your situation I watched Paul's Ted talk(he's very comfortable with talking). After that talk I listened to a guy talking about learning any language in 6 months and a search of the word bungalow showed a foreign word "bure". That got me thinking that an interesting search for your smaller home size might be using google's translator function.
Recently I rediscovered Pinterest.com and they have tons of followers with "tiny house" inklings and "cob" and "earthbag" and one search leads to another. A search of "small house plans" was fruitful also.
I believe one of the early earthbag home builders has a model of a clerestory (clear story) style home that I really like called the "sweet spot"
http://earthbagbuilding.com/plans/plans.htm
Hope this helps or leads you towards your goal.
Mike