Misdreavus are absolutely adorable!
Young Shikako in the Arm in Arm ‘verse is searching for Ghost type Pokemon–perhaps in order to understand her existence–but instead finds her Growlithe in the Haunted Mansion… after that, she kind of lets the idea go. Until she gets a Sableye and whatever the Gelel equivalent incident happens.
Then again, just because Sableye is her only Ghost type, doesn’t mean she doesn’t encounter others before or after then (she just doesn’t catch them). Such as whatever the Land of Birds, Kisuke Maboroshi, and chameleon castle incident equivalents are. Probably Sasuke’s Cubone turns into an Alolan Marowak (Fire and Ghost type instead of classic Ground type seems more Sasuke’s style).
Although… if Sakako were in this ‘verse you know she’d have an all/majority Ghost type team. And I actually quite like the idea of Misdreavus/Mismagius being one of her older team members. Hm, let’s see… Sakako’s Pokemon line up would most likely be:
Rowlet/Dartrix/Decidueye – Grass and Ghost
as a compromise between the Uchiha Talonflame and the Nara Sawsbuck? After all, Itachi probably decimated the Uchiha’s original Talonflame flock so the Uchiha 2.0′s clan Pokemon would be something different

Misdreavus/Mismagius – Ghost
Misdreavus came to Sakako very early on in her childhood with no preamble or anything. They make each other happy and no one had the heart to separate them (although, why would they?) They’ve been together ever since

Snorunt/Froslass – Ice and Ghost
Snorunt was actually a gift from Sakako’s Mum, from her research trip to Land of Snow to explore some old ruins. Honestly had no idea it would end up a Ghost type.

Honedge – Steel and Ghost
Sakako isn’t yet a master swordswoman, but she’ll get there eventually.

Litwick – Ghost and Fire
Actually a preference she gets from the Nara side of the family. Shikamaru isn’t the only clan member to have one of this species–Kasuga has a Chandelure.

Duskull – Ghost
Her most recent Pokemon. It’s not the reason why she has The Reaper as a nickname, but this little guy floating at her shoulder certainly doesn’t hurt matters. And also, “A glare from its single scarlet eye makes even burly grown-ups freeze in utter fear.” ~Sharingan~

Sakako’s Ghost team! 😀
(I was considering her having a Phantump–but that didn’t really match her too well and she already has a Grass type–and she doesn’t need to have one in order to encounter a lot of them. A sad amount of them, really.
Where her parents were constantly spotted with Absol, she’s probably frequently seen with wild Phantumps.)
