I don't think anyone has switched that match the old ones. At least I couldn't find any when replacing mine.
I got some replacements from a local rv dealer parts shop.
They have some that fit into small wall plates that help make up for the difference in hole size in the wall. Also the pins were different size so had to put new connectors on the wires.
If your kitchen sink light had two switches to operate it then you'll need on-on switches (same as 3 way switch in a house) in both those spots. Keep track of the way the original switches were connected so you can connect the new ones to operate properly figuring out the 3 way wiring can bevtrickynin an rv.
Here's a source to get some ideas.