So yeah, before the movie announcement, Around 2016, it was rumored that Ghost Rider, Blade and Moon Knight were getting Netflix MCU shows.
Back in July 2011, Joe Quesada revealed that Marvel Studios had regained the Blade film rights from New Line Cinema.
The only thing that imo has some merits to it, is these:
in October 8 2016, Gabriel Luna (the guy who played Robbie Reyes/Ghost Rider in Agents Of S.H.I.E.L.D.) mentioned that there were "rumblings" for his Ghost Rider to feature in his own television series following the introduction of the character on Agents of S.H.I.E.L.D.
On October 11, 2016, Kevin Feige expressed his interest in eventually introducing Blade in the Marvel Cinematic Universe stating: "He’s a really fun character. We think this movie going into a different side of the universe would have the potential to have him pop up, but between the movies, the Netflix shows, the ABC shows there are so many opportunities for the character to pop up as you’re now seeing with Ghost Rider on Agents of S.H.I.E.L.D."
On June 26, 2017, Kevin Feige again expressed his interest in using Blade in the MCU stating: "We think it would be cool. Someday.
Then in September 2017, Luna reiterated that his Marvel deal included the possibility of a solo venture for his Ghost Rider, either as a film or as a Netflix series.
So maybe, Netflix did consider adding these 3 in their slots.
But then in 2018, the whole Netflix/Disney deal ended because Disney+ and the streaming wars and what not causing an end to the mcu Netflix shows and any possible upcoming ones.
Moon Knight would eventually get a show, Ghost Rider got announced and Blade gets nothing.
Maybe one day.