Most linear switch with a click I've come across is the clicky Hi-Tek Space Invaders.
They're actually a completely linear switch with a clicker piece that follows in a groove, and you don't feel it. They also make clicky+tactile switches which you do feel. You can even easily remove the clicker piece to have a linear non-clicky switch without disassembling it.
They don't make them anymore AFAIK though so you'll have to use a vintage keyboard to get them, but they're easy enough to come across and not overly expensive. The only thing about them that can be irritating to some is that since the clicker is fully independent of the contact, the activation and click aren't necessarily at the exact same spot. I don't find it much of a problem, but if you avoid bottoming-out, you can't go by the click to confirm switch activation.
