Hello Camelliófilos.
This one is a time of Camellias.

It is very easy to have a mistake in the identification. It is difficult from photos of flowers, only.
Leaves, size, colour of the trunk, growth, smell, epoch of flowering and other information. But I try to help.

The first photo I believe that it is Camellia sasanqua ÂROSEAÂ .

The second photo can be ' Camellia sasanqua 'GINGETSU' '.

The third photo can be ' Camellia oleifera ' or ' Camellia yubsianensis '.

Regards.

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Here is a link that might be useful: Pazo de Oca

The flowers of #1 and #2 are sasanqua. It could be a named cultivars as okintos mentioned. Or they are possible ordinary sasanqua seedlings. If one grows 100 sasanqua seeds, most of them look like the #1 and #2 flower. They look ok but so typical and so ordinary.

#3 flower seems to be in Section Paracamellia Sealy. But it is not C yuhsinensis. I have three kinds of C yuhsinensis cultivars: Regular, Fragrant and High Yield( oil production)cultivars. Their leaves are much coarse and wider.