Right.
Besides, Himalayan is a point-coloured Persian, no?
IS he fairly big as compared to your other cat, or is this other one a kitten?
With this rather protruding nose he is no persian, not even old time persian (persian did had some nose 100, yes even 50, years ago!).
So whatever he is, he is not Himalayan.. Oldtime langhaired Siamese? A rare combination...
The modern langhaired siameses aka the Balinese, are usually not so dark in their point "masque".
I suppose "a look alike a Ragdoll" is as good a guess as something else, if you feel you want to compare this lovely cat with some breed. Esp the second picture shows quite some Ragdoll alike.
And ragdolls can be quite big some of them.
Good luck!