I love how you realized that you were mixing up Theo and Apollo and immediately continued to mix them up lol.
When Juliet´s parents talk about the dads worries regarding Juliet the mom says that are remnants of humanity. So it´s implied that he isn´t a legacy vampire and instead was created. So he is a different breed compared to the mom.
I really enjoy the different things they are doing with their abilities, like the paralyzing blood. It´s unique and an interesting approach. The same with Elinor being the only one that can glamour people. Which brings up the question if potentially Oliver and Juliet also have some hidden abilities that might just be dormant and undiscovered so far.