Probably ASB, but I love me some Hans of Denmark (1518-1532) surviving:
Hans,
Governor of the Netherlands [1545[1]-1552], Prince of Denmark, Sweden & Norway (1518-1552) 1m: 1541 [2] Marguerite de France (b.1523)
Klaudia (b.1542) m: 1560 Felipe II, King of Spain [3] (1527-1598)
Isabel (b.1563)
Stillborn Son (1565)
Juan, Duke of Burgundy [as Jean II, from 1598] (1568-1618) m:
Stillborn Son (1569)
Margarita (b.1572)
Felipe (1574-1582)
Johann (1543-1545)
Karl, King of Denmark & Norway [from 1563 [4] (b.1544) m: 1560 Anna of Saxony (b.1544)
Margrethe (b.1561)
Christian (1563-1567)
Morits (b.1564)
Anna (b.1566)
Stillborn Daughter (1567)
Carl (b.1569)
Kristina (b.1571)
Margarethe (b.1545) m: 1563 [5] Adolph, Duke of Holstein-Gottorp (1545-1586)
Sophie (1564-1622)
Frederik (1568-1577)
Stillborn Daughter (1570)
Philippa (b.1572)
Christian, Duke of Holstein-Gottorp (b.1574)
Christian (1547-1552)
Stillborn Son (1548)
Franz, Governor of the Netherlands [1576-1592] (1550-1592) m: 1573 Marie Eleonore of Cleves (b.1550)
Margarethe (1575-1589)
Franz (1577-1582)
Eleonore (1580-1605)
Christian Philipp, Duke of Cleves [from 1609] (b.1582)
Franz (1584-1586)
Isabella (b.1585)
[1] Karl V accepts one of his sister, the Queen of Hungary's resignation requests
[2] as OTL, François proposes his sole surviving daughter for Karl V as he passes through Paris. Karl refuses, but suggests his nephew, Hans, in his entourage instead. François is not pleased by the idea of a match with a "landless" prince, but given that his sisters are duchess of Lorraine and Electress Palatine, figures it could be worse.
[3] Mary Tudor lives slightly longer, so Élisabeth de Valois and D. Carlos marry (OTL Kristina of Denmark was attempting to marry her own daughter to Felipe II as a third wife)
[4] Frederik II dies in one of his drinking bouts, with no issue. His brother, Magnus, and his mother, Dorothea of Saxe-Lauenburg's ship sank en route to Sweden. Leaving his brother, Johann of Schleswig-Holstein-Sonderburg-Plön as heir. However, into the dispute between the two Johanns (Frederik II's brother and his uncle, Johann of Schleswig-Holstein-Haderslev) Karl's name is touted as a third candidate. Nobody's convinced, but the fact that he's male, married to a Lutheran (at least), technically the senior-most heir to Denmark, and brings connections at a time when Denmark is increasingly diplomatically isolated...oh, and he has a son, means he sort of wins out by default (even if nobody is particularly thrilled)
[5] marriage arranged to ensure Adolph's support for Karl. Was not a particularly happy one due to mismatched temperaments (religious and personality-wise)
@King of Danes @Nuraghe @isabella