There is no clear and fast rule. The emphasis is entirely dependent on the rhythm of the tune. While there are some standard feels for different time signatures, they are broken as often as they are kept. In terms of standard feels, I'd say that all your examples are correct. It's important to note that 5/4 with accents on the 1 and 4 feels just like 3 + 2 (ala Take 5) and 6/8 generally feels like 2/4 with triplets instead of 1/4 notes (like House of the Rising Sun).
But if you listen to anything that really f&*ks with time signatures, these rules will fall apart quickly. Listen to Schism by Tool, for instance. The main riff goes back and forth between 5/8 and 7/8, but it's just a triplet and then 1/8th notes. The accent seems to roll between the beats. And then it changes to 6/8 and 7/8 and the feel of the piece keeps. Eventually the tune ends in 4/4 with one of the most rolling, odd sounding 4/4s I've heard in a while. After 5 minutes in odd signatures, it's almost hard to believe that the end is in the "common" time signature.
So basically, yes, you've got the standard down. But all the interesting stuff happens on the edges by bucking the rules. Even the standard 5/4 piece, Take Five, was revolutionary because no one had really done that before. It's only "standard" now because Brubeck paved the way.