All mine, including Stirling and croaps. I prefer loading with a well shaken-out brush, so all my soaps are bloomed. I pour the water off before loading and add drops as needed. I let them air dry before putting away and never had a soap become gooey.
I'm with the majority of the posters, I have never bloomed a soap, never had a problem. If a soap doesn't preform well it becomes body soap and doesn't get reordered (this has hardly ever happened).
I've never gotten a bad lather out of an unbloomed soap, granted, I've never tried modern Williams without soaking it since everyone suggests doing so. I generally never bloom soap, because I don't feel the need.
I personally don't think any soap needs blooming but if you like to do so then do so. To my mind blooming does two things:
1. Makes it easier to load soap into the brush
2. Brings out the scent a little more initially
All you need for a good lather is the correct soap to water ratio, which is different for each individual soap. Some have a wider sweet spot than others making them easier to lather. If you're not getting the volume or look to your lather you want then add more water, a little bit at a time. This can be done up front (blooming) or after loading. Slow and steady wins the race as they say.