Three more: Castle Toy Co. Einstein (Simon clone) has a COP421, so that should be easy to dump. Tandy Baseball has a PIC1650A- maybe I can dump this one; I know Kevin can. Atari Touch Me has an AMI chip labeled C10745. I haven't checked the pinout yet to see if it's standard or custom.
This is from a long while ago, so I won't bite you if you can't remember. Is the C10745 chip from another version of Touch Me?(older?) The one you dumped was a PIC1655.