Question: what does Jonna Fitzgerald and Susan Akin have in common?

Context articles: Demographic profile
Rainbow Swash
Does exactly what it says on the tin
Valet de chambre
Abhisheka
Libby Kennedy
F. Scott Fitzgerald and 'The Last of the Belles'
Samantha Fitzgerald
Jonna Fitzgerald
Susan Akin

Demographic profiling has long been a tool utilized by marketers so that they may be as efficient as possible with advertising products or services and identifying any possible gaps in their marketing strategy.
 Demographic profiling can even be referred to as a euphemism for corporate spying (Hudson, J. 2002).
 By targeting certain groups who are more likely to be interested in what you're selling, you can efficiently expend your advertising resources so that they may garner the maximum number of sales (Arnott, D., & FitzGerald, M. 1996).
 This is a more direct tactic than simply advertising on the basis that anyone is a potential consumer of your product, while this may be true, it does not capitalise on the increased returns that more specific marketing will bring (Jothi, A. L. 2015).
 Traditional demographic profiling has been centered around gathering information on large groups of people in order to identify common trends (GfK.
 2016).
 Trends such as, but not limited to: changes in total population and changes in the composition of the population over a period of time.
 These trends could promote change in services to a certain portion of the population, in people such as: children, elderly, and the working age population.
 They can be identified through surveys, in-store purchase information, census data, and so on.
 (Arnott, D., & FitzGerald, M. 1996).
 New ways are also in the works of collecting and utilizing information for Demographic Profiling.
 Approaches such as target-sampling, quota-sampling, and even door-to-door screening.
The Rainbow Swash is the common name for an untitled work by Corita Kent in the Dorchester neighborhood of Boston, Massachusetts.
 The rainbow design painted on a 140 ft tall LNG storage tank is the largest copyrighted work of art in the world.
 Highly visible from daily commuters' drives on Interstate 93, the landmark is considered one of the major landmarks of Boston, akin to the Citgo sign.
"It does exactly what it says on the tin" (often quoted as "does what it says on the tin") was originally an advertising slogan in the United Kingdom, which then became a common idiomatic phrase.
 It colloquially means that the name of something is an accurate description of its qualities.
 It is akin to the previously existing phrases "by name and by nature" and "it lives up to its name".
Valet de chambre (] ), or "varlet de chambre", was a court appointment introduced in the late Middle Ages, common from the 14th century onwards.
 Royal households had many persons appointed at any time.
 While some valets simply waited on the patron, or looked after his clothes and other personal needs, itself potentially a powerful and lucrative position, others had more specialized functions.
 At the most prestigious level it could be akin to a monarch or ruler's personal secretary, as was the case of Anne de Montmorency at the court of Francis I of France.
 For noblemen pursuing a career as courtiers, like Étienne de Vesc, it was a common early step on the ladder to higher offices.
Abhisheka or Abhishekam (Devanagari: अभिषेक "abhiṣeka ") is a Sanskrit term akin to puja, yagya and arati that denotes: a devotional activity; an enacted prayer, rite of passage and/or religious rite.
 Within this range of senses, "abhiṣeka" is common to all Dharmic faiths such as Hinduism, Buddhism and Jainism.
Elizabeth Grace "Libby" Kennedy (also Kennedy-Fitzgerald) is a fictional character from the Australian soap opera "Neighbours", played by Kym Valentine.
 She made her first on-screen appearance on 3 October 1994 and departed on 5 November 2004, returning briefly for a single episode on 27 July 2005, before returning on 12 November 2007.
 Libby is the only daughter of Karl and Susan Kennedy and the mother to a son, Ben Kirk.
 Libby's storylines have included being involved in a motorbike accident, the loss of her husband Drew Kirk, giving birth to Ben, getting married to Daniel Fitzgerald and subsequently separating from him.
 In 2008, Valentine was forced to take sick leave for one month and executive producer, Susan Bower, made the decision to temporarily recast "McLeod's Daughters" actress Michala Banas in the role for a month.
 Valentine took leave from "Neighbours" in 2010 due to ill health and returned to the set in January 2011.
 A few months later, Valentine took indefinite leave from "Neighbours" to focus on her health.
 In March 2014, it was confirmed that Valentine would be returning to "Neighbours".
 She made her on-screen return on 11 June 2014.
F. Scott Fitzgerald and 'The Last of the Belles' is a 1974 ABC-TV movie directed by George Schaefer and starring Susan Sarandon, Blythe Danner and Richard Chamberlain.
 The film, which is known as The Last of the Belles in Australia, was written by James Costigan based on F. Scott Fitzgerald's short story "The Last of the Belles".
Samantha "Sam" Fitzgerald (also Grieves) is a fictional character from the Australian soap opera "Neighbours", played by Simone Buchanan.
 She made her first screen appearance during the episode broadcast on 21 March 2008.
 After departing on 25 June 2008, she made a brief return on 24 November 2008.
 Sam's main storylines focused on her marriage to Daniel Fitzgerald (Brett Tucker), her bipolar disorder, which was triggered by a miscarriage prior to her introduction, and a pregnancy.
 In June 2010, executive producer Susan Bower announced that Buchanan had reprised her role and Sam returned on 1 November 2010.
 She was the lead prosecutor in Stephanie Scully's (Carla Bonner) culpable driving trial.
 The character departed on 24 November 2010.
Jonna Fitzgerald is an American beauty pageant titleholder and musical entertainer.
 She was crowned Miss Texas 1985 then Preliminary Talent Winner and 2nd Runner Up to Miss America 1986.
 In computer modelling that successfully predicted that Susan Akin would be named Miss America, Fitzgerald's odds were set at 22 to 1.
Susan Akin (born August 12, 1964) is an American beauty pageant titleholder from Meridian, Mississippi who was Miss America 1986