Info on Sergeant Pepper's Lonely Hearts Club Band:
https://en.wikipedia.org/wiki/Sgt._Pepper's_Lonely_Hearts_Club_Band
https://www.beatlesbible.com/albums/sgt-peppers-lonely-hearts-club-band/

On The Cover of SPLHCB

Top row

(1) Sri Yukteswar Giri (Hindu guru)
(2) Aleister Crowley (occultist)
(3) Mae West (actress)
(4) Lenny Bruce (comedian)
(5) Karlheinz Stockhausen (composer)
(6) W. C. Fields (comedian/actor)
(7) Carl Jung (psychiatrist)
(8) Edgar Allan Poe (writer)
(9) Fred Astaire (actor/dancer)
(10) Richard Merkin (artist)
(11) The Vargas Girl (by artist Alberto Vargas)
(12) (Leo Gorcey, picture was removed)
(12) Huntz Hall (actor)
(14) Simon Rodia (designer and builder of the Watts Towers)
(15) Bob Dylan (singer/songwriter)

Second row

(16) Aubrey Beardsley (illustrator)
(17) Sir Robert Peel (19th century British Prime Minister)
(18) Aldous Huxley (writer)
(19) Dylan Thomas (poet)
(20) Terry Southern (writer)
(21) Dion DiMucci (singer/songwriter)
(22) Tony Curtis (actor)
(23) Wallace Berman (artist)
(24) Tommy Handley (comedian)
(25) Marilyn Monroe (actress)
(26) William S. Burroughs (writer)
(27) Sri Mahavatar Babaji (Hindu guru)
(28) Stan Laurel (actor/comedian)
(29) Richard Lindner (artist)
(30) Oliver Hardy (actor/comedian)
(31) Karl Marx (political philosopher)
(32) H. G. Wells (writer)
(33) Sri Paramahansa Yogananda (Hindu guru)
(34A) James Joyce (Irish poet and novelist) – barely visible below Bob Dylan
(34) Anonymous (hairdresser's wax dummy)

Third row

(35) Stuart Sutcliffe (artist/former Beatle)
(36) Anonymous (hairdresser's wax dummy)
(37) Max Miller (comedian)
(38) A "Petty Girl" (by artist George Petty)
(39) Marlon Brando (actor)
(40) Tom Mix (actor)
(41) Oscar Wilde (writer)
(42) Tyrone Power (actor)
(43) Larry Bell (artist)
(44) David Livingstone (missionary/explorer)
(45) Johnny Weissmuller (Olympic swimmer/Tarzan actor)
(46) Stephen Crane (writer) – barely visible between Issy Bonn's head and raised arm
(47) Issy Bonn (comedian)
(48) George Bernard Shaw (playwright)
(49) H. C. Westermann (sculptor)
(50) Albert Stubbins (English footballer)
(51) Sri Lahiri Mahasaya (guru)
(52) Lewis Carroll (writer)
(53) T. E. Lawrence ("Lawrence of Arabia")

Front row

(54) Wax model of Sonny Liston (boxer)
(54A) Unidentified laughing figure – barely visible[2]
(55) A "Petty Girl" (by George Petty)
(56) Wax model of George Harrison
(56A) Sophia Loren (actress) – a small portion of hairline barely visible between the necks of wax models of George and John
(57) Wax model of John Lennon
(58) Shirley Temple (child actress) – barely visible behind the wax models of John and Ringo, first of three appearances on the cover
(59) Wax model of Ringo Starr
(59A) Marcello Mastroianni (actor) – part of his hat is seen behind the wax models of Ringo & Paul
(60) Wax model of Paul McCartney
(61) Albert Einstein (physicist) – largely obscured
(62) John Lennon holding a french horn
(63) Ringo Starr holding a trumpet
(64) Paul McCartney holding a cor anglais
(65) George Harrison holding a piccolo
(65A) Bette Davis (actress) – hair barely visible on top of George's shoulder
(65B) Timothy Carey (actor) – only part of his shoulder is visible[3]
(66) Bobby Breen (singer)
(67) Marlene Dietrich (actress/singer)
(68) (Mohandas Gandhi picture was removed)
(69) An American legionnaire[4]
(70) Wax model of Diana Dors (actress)
(71) Shirley Temple (child actress) – second appearance on the cover

Props on the cover

Cloth grandmother-figure by Jann Haworth
Cloth doll by Haworth of Shirley Temple wearing a sweater that reads "Welcome The Rolling Stones Good Guys" – third and last appearance on the cover
A ceramic Mexican craft known as a Tree of Life from Metepec
A 9-inch Sony television set, apparently owned by Paul McCartney 
A stone figure of a girl
Another stone figure
A statue brought over from John Lennon's house
A trophy
A doll of the Hindu goddess Lakshmi
A drum skin, designed by fairground artist Joe Ephgrave[6]
A hookah (water pipe)
A velvet snake
A Fukusuke, Japanese china figure
A stone figure of Snow White
A garden gnome
A Baritone horn
A three-stringed flower guitar

People excluded from the cover

(12) Leo Gorcey – was modelled and originally included to the left of Huntz Hall, but was subsequently removed when a fee of $400 was requested for the use of the actor's likeness.[7][8]
(68) Mohandas Gandhi – was modelled and originally included to the right of Lewis Carroll, but was subsequently removed.[7][8] According to McCartney, "Gandhi also had to go because the head of EMI, Sir Joe Lockwood, said that in India they wouldn't allow the record to be printed".[4]
Jesus Christ – was requested by Lennon,[4] but not modelled because the LP would be released just over a year after Lennon's Jesus statement.[9]
(C) Adolf Hitler – was modelled and was visible in early photographs of the montage, positioned to the right of Larry Bell, but was eventually removed when his inclusion was considered offensive