The standard ones, of course

 (early)
 PNDSLR
 PRNDLR
 PRNDS
 PRNDIL
 PRND2L

 (later,starting in the 1950s)
 PRND(1)D(2)L
 PRND21
 even PRNDL(2)L(1)

 According to one posting here, also PRNDGr(!!)LR--Gr meaning Grade.

 Others:

 RN1234D (5-speed Austin America automatics!!)

 Mercedes Benz and Honda tend to have selections whose selected gfears
 for each ends at best in second..in short, no "1" hold, and in some
 cases no 2-3 shift.

 Here's a description
 (Merdeces Benz 4-spd.automatics as tradioanll installed)
 PRN432

 Then
 PRND31,etc.

 Truck transmissions are more complicated (off road..)
 the Allison HT70's, AT545's,etc. with their hyphenated gear-descrtpitve
 lever selections.

 For instance..
 R,N,306-3-5,3-4,1-2 (HT70)
 R,N,2-5,2-4,2-3,1 (AT545)

 (Go to allisontransmission.com, get Adobe (tm) Acrobat Reader then
 download the operators manuals for as many as you want to read all of
 THEIR unsual and very serviceable shift patterns.)

 WHich brings me to:
 Bus automatic transmissions selections:
 For many years, transits used only 2-speeds--either SPicer (with the
 selecitons written out in full-see below) or Allison (VH/VS-2-6/8
 series) (with the usual abbreviations).

 The selectors were DIRECTLY directionional, with NO other postions than
 just Forward--just one.

 Like--
 (Spicer)
 FORWARD
 NEUTRAL
 REVERSE

 Allison:
 F
 N
 R

 Those positons also went for the later (1966-1967 at oldest) overdrive
 three speed automatics, but only with the F-N-R patterns as before.
 (Maybe there was a semi-automatic clutching thing).

 Later the RND21 (Allison/GM V730) all the way to today's hi tech, ultra
 sophisticaeed B 400-600 series with the little panel-buttons like so:
 R [mode]
 N [^]-for upshift
 D [V] for downbshift

  :) 

  The above LARGELY applies to transit buses..


  School buses used mostly the various medium Class 6 Allsion off roasd
  and "trashtruck" semi-automatics, the HT70 series (3-6,3-5,3-4,and 1-2
  of the gear selecitons) or HT545 (1,2-3,2-4,2-5) or the M643 4-speed
  auto, kinda (think Hydramastic) taking General Motors full circle on
  automatics, (forward gear selection varying).

  Anyway, especially as this is a automobile newsgroup, I'd like to know
  of the more odder car automatic shift patterns

  Just to share some more..
  A friend I know had a Jeep with this:
  R
  N
  D
  3
  1-2
  Plus two-peed transfer case  :-) 

  Some of those "double drive"(D2, D1), variaitons are interesting..the
  little dot, big dot, :double-D" being one and there is even a P R N 2D1
  L I saw as a kid once.

  RN21L(a la the Autmatic Stickshift utilized in the 1960s-1970s by VW).

  Thnderbird used the following twos-peed control..RNDrLo(like such).

--------
The old DAF Variomatic (infinite-ratio belt drive - it was a 
proto-CVR system) had a

Forward
Neutral
Reverse

lever, with just arrows for the indication. My grandfather owned a 
66DL which would frequently die as it was put in Forward mode. He 
habitually started it in gear with a very dangerous jump forward as the 
engine fired.

I encountered a later one of these cars, badged as Volvo 66GL (I dunno 
what constituted the Grandiosity of its Luxury - more cheap fake 
plastic woodwork, probably), and this had a more normal PRND selector, 
though P was quite useless as the parking pawl would stick horribly. 
(The handbrake was also quite useless, so parking was rather 
precarious.)

That 66GL had a cut-out switch so you couldn't start it in D, but with 
automatic choke being what it was would also frequently die when put in 
gear. "Try Reverse." "Bloody hell!"