I recommend that appliances be sized for average usage. What I mean by this is if your do not normally use four burners at once for cooking then don't try and squeeze a full sized range into your tiny house. Most people usually use a single burner at a time and ocassionally two. I think more than two in use at any one time is a rarity for most people so I recommend a two burner cooktop at most or better a set of moveable induction hot plates. They cool off quickly and they can be stored out of the way when not in use.
Instead of an oven I recommend getting one of the larger toaster ovens or better yet a convection microwave oven. It can be more expensive than a cheap conventional oven, it takes up less space and can be stored when not in use.
On electronics consider installing a small HDMI projecter, pull down or fold down screen and a sound bar rather than installing a TV on the wall. You can then use that wall space for art, storage or something else.
Most Furniture for tiny homes is custom built to fit the space and functions that it needs to accomplish. However, I recently bought some modular furniture that I am quite
pleased with from HomeReserve.com It is modular so I was able to buid the sectional to fit my space, it comes ready to assemle (we built seven sections in about 3 hours),
all the pieces come with a ten year warranty, and each piece has built in storage. If you want to change the fabric or add on at a later date everything is sold as individual
pieces including the fabric coverings.
No matter what the category of item, space is at a premium in a tiny home, select the smallest and most energy efficient device for the task you are performing.
I hope this helps.