I got my last bunch of Rigotti Golds directly from ets-Rigotti, and they are marked just like the ones sold in the US (wwbw, etc.). The reed itself says the number strength in .5 increments, and the boxes are marked soft, medium or hard.
For comparison: Of your list I've only played FL reeds (the excellence (jazz) model, not the classique). I play 3 medium on tenor (Rigotti), so I ordered the 3. I've only played 3 out of the box, and they seem to be pretty similar in strength. They do vibrate differently though. To me it feels like the Rigotti reeds take a little less air to start vibrating, so they are maybe a little more responsive. The Rigottis seem to last a long time. I've only had the FLs out for about two weeks though, so I don't know how long they will last. One of the reasons I like the Rigotti reeds is that I might get one out of every two to three boxes that isn't playable. So far the FLs are 3 for 3. They are made by the same company, so they must use good cane and have reasonable quality control.