(Diagram credit: Bert Burgemeister, Common Lisp Quick Reference)

t

  atom

  readtable

  package

  symbol

    null

    keyword

    boolean

  restart

  random-state

  hash-table

  structure-object

  standard-object

 class

  built-in-class

  standard-class

  structure-class

 method

  standard-method

method-combination

character

  extended-char

  base-char

  standard-char

sequence

  list

cons

array

simple-array

vector

string

simple-string

base-string

simple-base-string

simple-vector

bit-vector

simple-bit-vector

function

  compiled-function

  generic-function

  standard-generic-function

stream

  file-stream

  two-way-stream

  synonym-stream

  string-stream

  broadcast-stream

  concatenated-stream

  echo-stream

pathname

  logical-pathname

number

 complex

 real

  float

   short-float

   single-float

   double-float

   long-float

  rational

   ratio

   integer

    signed-byte

     unsigned-byte

      bit

    fixnum

    bignum

condition

  warning

   style-warning

  simple-condition

   simple-error

   simple-type-error

   simple-warning

  serious-condition

   storage-condition

   error

    type-error

    program-error

    control-error

    package-error

    print-not-readable

    stream-error

      end-of-file

    parse-error

      reader-error

    cell-error

      undefined-function

      unbound-variable

      unbound-slot

    file-error

    arithmetic-error

     division-by-zero

     floating-point-inexact

     floating-point-overflow

     floating-point-underflow

     floating-point-invalid-operation

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