Yeah, there are a few different races, but nothing drastic (like, they used a giant in a case where the prereq was to be Large or bigger). They've got a doppelganger for the mindspy, Other than those....pure PHB as far as I can tell.
The spell-less Paladin and Ranger...Paladin gets a good-aligned weapon, a +4 bonus to Str, Wis, or Cha for a few minutes 1/day, some extra lay-on-hands goodies for their mount (can heal negative conditions, ability score damag, etc. by spending more points), and a holy sword spell. Ranger gets +10 ft. speed, +4 to Con, Dex, or Wis like a paladin, neutralize poison, remove disease, and freedom of movement.
As for more detail on the shifters...the Nature's Warrior gains sort of 'wildshape bonuses' that they can use while in wild shape, such as +1/lv natural armor, +3 natural weapons, grappling, fast healing, and more fly speed. Warshapers can grow natural weapons of stuff they can wild shape into (it seems that they could basically always have one on), get reach, and change forms multipule times for the duration (or change form quicker). A bizzarre quality that seems to jack up the power level quite a whole lot...they get a +4 to Str and Con at 2nd level (?!).
As for the Kensai, it works well as a more ONE SPECIFIC WEAPON master. There's no 'I use longswords' for this guy, it's "I use THIS longsword." He also gains some unusual leadership-style abilities....which is wierd, but whatever. All-in-all makes for a mild mish-mash, but certainly serves the goal of a knight or steward devoted to one weapon. They have to take oaths of service to lords and quests, so they're kind of mandated to be 'your royal ninny's patsy' sometimes.
When looking for a magic-less ranger, I was expecting a ranger with no magic. Maybe it's my Canadian English that is failing me.
