Does anyone have some pics on ideas how to transition between ceramic floor in kitchen and 3/8 engineered wood. Both are pretty close in terms of height. I'm thinking brown acrylic caulk but the width of gap might be a bit too much. T molding is my second option but not the preferred option.
I'm mostly concerned about the expansion gap and it looking good.
Any ideas??

Whee are your pictures? maybe you just posted in the wrong section? With your engineered product, you can leave a slight gap, and caulk it, or; you could use a "T" moulding between the two,which will give you more fudge space if you think you need it.

here where I live you can buy "sanded caulk" that is the same color as your grout in the ceramic tile. Caulking the joint between the two products rather than grouting will allow for expansion.