I've noticed that many drugs have names that end in the same syllables:
For example, Wikipedia on Dabrafenib lists a number of similar drugs at the bottom of the page that end with syllables like these.
What do they signify?
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Stems and affixes tell you the class of drug (and sometimes other properties). Drugs in the same class work in a very similar way, so therefore you can tell what other drugs it's related to.
This is a massive list: https://druginfo.nlm.nih.gov/drugportal/jsp/drugportal/DrugNameGenericStems.jsp
Usually it's the suffix that tells you the most. For example:
In fact, sometimes we refer to classes by their stem.
From your list:
These and related drugs are in the realm of chemotherapy and anti-inflammatory medications.
Also, -mabs are really neat. They are antibodies (just like your body makes to recognize infections and start an immune attack), which are designed to lock onto one extremely specific thing, then cause an effect right at that spot. For example, it's been the frontier in cancer chemotherapy, as you can sometimes target to kill just the bad cells in certain cancers. Also in autoimmune diseases, they are used instead of steroids that cause effects all over the body. They're hard to produce and expensive, and not without side effects, but have lots of potential!