With all due respect, why wouldn't you be willing to do the research yourself?
Most sites on the web only list foods based on their ingredient list and don't
take into account nutrient levels and whether or not those levels are excessive
for the particular lifestage/lifestyle of the cat.  (There are so many games
played with ingredient lists in the pet industry, that you won't be getting
accurate information anyway)  Otherwise, you're relying on somebody else's
information which may or may not be correct.  By calling companies directly,
you'll find how knowledgeable those companies are and which aren't.  By the
way, if you do check, be sure to compare nutrient levels on a "dry matter
basis" to get an accurate comparison.

Most all of the "premium" foods (that can't be found in grocery stores) use
better quality ingredients.  But what's really important are the levels of
protein, fat, phosphorus, calcium, magnesium, calorie content, sodium, etc.
You won't get those levels by looking at an ingredient list.

Well, that really depends on how you define healthy.

How DO you define healthy?

Analysis of canned and dry cat food. These were made for CRF cats in
particular but you may find what you are looking for.
http://webpages.charter.net/katkarma/canfood.htm
http://webpages.charter.net/katkarma/dryfood.htm