Here is a list of all enums with links to the classes they belong to:

Attribute : sf::ContextSettings
ClusterGrouping : sf::Text
Equation : sf::BlendMode
Factor : sf::BlendMode
LineAlignment : sf::Text
Method : sf::Http::Request
Status : sf::Ftp::Response, sf::Http::Response, sf::Socket, sf::SoundSource
Style : sf::Text
TextDirection : sf::Text
TextOrientation : sf::Text
TlsStatus : sf::TcpSocket
TransferMode : sf::Ftp
Type : sf::Cursor, sf::IpAddress, sf::Sftp::SessionInfo::HostKey, sf::Shader, sf::Socket
Usage : sf::VertexBuffer
Value : sf::Sftp::Result