I don't see all region players in the stores here (USA) so you'll have to find all the all region models and work the list of features you want.
There's another factor here. In 2010 (again here, USA) they sunset the feature of audio out on such players so you may be stuck with other solutions. This was commonly referred to as "plugging the analog hole." This may be most of the reason you can't find analog outputs on the players.
I am looking to buy a portable Blu-ray player and portable speakers for my organization, and I need to know what kind of Blu-ray player and speakers are best.
I searched online for "outdoor speakers," but most of them only can work with speaker cables, and we don't want to buy a separate amplifier unit. Also, most Blu-ray players use HDMI to transmit audio, but we may be connecting it to projectors without an "Audio Out" port. Finally, the Blu-ray player needs to play DVDs and Blu-rays from all world regions.