Does it makes a difference in Halacha between sexual contact (intimate touching and kissing) other than intercourse and actual intercourse with a non-jewish woman?

Shalom, Thank you for your question. There exists a debate as to the level of severity of actions that are not actual intercourse. All opinions agree that they are totally forbidden. However, there is debate as to whether they are forbidden by the Torah or by the Rabbis. It could be that actions that are intimate to the extent that they are usually preformed as a forerunner to actual intimacy, are more strict than contact that is occurs outside of a sexual framework. Blessings.