Re: 'Journey Women' who became top players for a brief period before returning to nor
Cetkovska, Benesova, Garbin all belong to this category too. Had risen in rankings quite significally due to string of good performances and solid play (and some lucky draws too) and then failed to defend their ranking points the next season.
Razzano was such a nice example of a late bloomer but then injuries and that sad story with her fiancee dragged her back to being a journeywoman. I always feel bad for her.
Then you have Vesnina who was a completely different player for just one season and was ranked as high as 22 in the world. I'm afraid Makarova will follow her steps soon
So I highly doubt any of these players and any of those ones you've listed could be referred as top players.
Petrova | Sirotkina | Kleybanova | Serena | Gavrilova | Makarova | Pavlyuchenkova
Cibulková | Rybariková | Riske | Svitolina | Mladenovic | Kerber | Kvitova
Bencic | Konjuh | Kalinina | Kalinskaya | Zhuk | Potapova | Levashova | Vondrousova