They are all Ambulyx substrigilis., a species widespread in the oriental tropics.
(See light forms at bottom of webpage.) https://tpittaway.tripod.com/china/a_sub.htm
They are recognised by dark veins & vriegated shadings.
The lightly marked forms have often been confused with two other species found in Sundaland .
They are A. pryeri & clavata.
They are unlikely to have reach India though anything is possible.
In specimen 2, 3, & 9 the variegation is slight & the suggestion is often of these two species.
There are also much errors on the net.
The middle dark vein which runs to the costa , is slightly curve up & widen a little.
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