It is true that the name "Roundup" has shifted from being glyphosate only, to being used in the marketing of several different chemistries, usually mixed with glyphosate. However, there is still "Roundup" being sold that is glyphosate alone.
There are also many different companies selling glyphosate under a variety of names. Glyphosate came on the market in 1974 and has been off patent for a very long time.
There has been no study that has shown glyphosate causes non Hodgkin's Lymphoma in humans. The study that showed an increase of lymphoma in mice used 100% pure glyphosate directly applied to the mice. Studies that have been used to support lawsuits have all been statistical analysis of studies in mice using various models to try and extrapolate the results to humans. The U.S. EPA still maintains that there is no increased risk from glyphosate when used according to labeled directions.
I have been involved in research and use of glyphosate since the mid 1980's, and I have no reservations in using it.
2,4-D may be used in some mixes under the "Roundup" brand, but 2,4,5-T hasn't been on the market since 1985. Use of 2,4,5-T on most food crops was banned in the early 1970's, but some registrations remained for non crop uses until 1985.
There are a significant number of weeds that have developed resistance to glyphosate, but it still remains a valuable tool for many crop uses either alone, or in mixes with other chemistries.
And just so nobody thinks I'm a chemical "whore" (joke name used amongst researchers), I have never worked for any chemical company marketing glyphosate.