So, at least one of them has a part number. Here is a datasheet for a very similar model. The PN is KV4239-T2B801 or 802 vs yours which are B012. Based on current for the entire list of motors, these look like they will work OK, just watch the current in your settings. If you want the exact data sheet, you will need to contact the manufacturer to confirm they are in the right current range.
To measure the windings, you need a DVM. They are cheap. You should not be without one. If you want to spend more, let me know.
A cheap one: