Pearl and The Politican. The reason why David was a popular fancast here is people actually watch stuff.
Are you implying that being in House of the Dragon on it's own, isn't enough? Was Emilia Clarke still an "unknown" actress after the first season of Game of Thrones? A show that was watched by a fifth of what the first season of House of the Dragon was watched by?
Notice you skipped over Hal and Guy. And if you're downplaying the importance of Peacemaker and Lobo, that also means they're casting smaller roles with named actors. Isabela Merced is also decently well known and has well over a dozen credits to her name in starring and major supporting roles.
What is "short" about a 5'7 woman? Are you implying there are no ways to make someone look taller? Tom Cruise and RDJ not action stars? As for age, you are literally trying to block out people David's age. That's the point.
Acting > Height. If you have the perfect person to portray Wonder Woman at 5'6 and 35, the idea that she shouldn't be cast is ridiculous. Rachel is older then Adria Arjona.