Tapered ballnose endmills are available, and can be custom ground.
A progressive series of G13's could do the job for you...
Clamp the stock to the table with several strips of tape under it.
Profile your parts, but not to full depth, leaving enough material to hold them in place while you do whatever other features your parts have.
When this setup is finished, light cuts around the parts will seperate them from the stock without tossing them across the shop.
Alternatively, if the stock is thicker than the finished parts, leave them together while machining, seperate them later with a bandsaw, and skim off the excess material from the back side in a vise.
That's the fun thing about this trade/hobby; there's a million ways to do anything, you just have to find what works for you/your equipment/your products.