Case in point: Crown Prince Rupprecht of Bavaria. Although he never reigned (characterized as "the greatest king Bavaria never had"), nobody has ever questioned or contested his claim to headship of the royal house of Wittelsbach. Accordingly, his name (like those of the enthroned kings who preceded him), is presented in block letters. Ditto for his son, heir, and successor, Albrecht.
However, if the succession is disputed (commonly the case in deposed dynasties), then block letters are reserved only for the reigning monarchs and the last undisputed head of the house. The other members have their names in lower case letters only -- including those of rival claimants to defunct thrones. This would characterize dynasties such as Russia and the Two Sicilies (in any house where there is no clear head, the author issues a disclaimer at the beginning explaining the nature of the succession dispute).
The names of all dynastic members are presented in bold font, whereas those of morganauts and illegitimate issue are not.
Only male-line descendants of sovereigns are presented, even if female succession is permitted. The names of female sovereigns and heads of houses will be presented in block letters, followed by the names of their male-line descendants. Cases in point: Spain, Portugal, Brazil, and Great Britain.
The exception is Prince Ferdinand of Bavaria (1884-1958), who moved to his wife's native land of Spain and settled there permanently -- even being granted the title Infante. Accordingly, his children by Infanta Maria Teresa are presented under the section of Spain, not Bavaria.
Also, in some houses which have adopted fully cognatic primogeniture as the succession law, the names of all the dynasts, in both the male and female lines of descent, are presented. Case in point: Belgium in 1991 amended the constitution to permit females to inherit the throne, granting them equal rights as males. So the names of Princess Astrid's children (who were all given Belgian royal titles when inserted into the succession) are presented.
Are all these observations correct?