Could a low-end GPU have 1 or 2GB of memory to miner with alternative coins? Could the minergate program identify that GPU or would it have to go to miners by console?
You were in the right direction. You have to try it with whatever source you have at first. Then you can expand.
Almost all miner client software will recognize your cards, and you only need to find it, try it, do it. You could try to find GPU mining software list related to your cards, you can explore this forum or google it. Try it one by one until you get the most suitable for you.