Okay, so I have two weeds to get an opinion on. The first picture is one, the next two are another.
First one looks like Melilotus
Second appears to be an Epilobium of some type.
Here is a link that might be useful: Melilotus albus
Yes, #2 is an Epilobium. Pull & discard before the seeds fly everywhere.
First one is white sweet clover. Great green manure, biennial, fixes its own nitrogen and has a very nice smell. Makes a terrible weed, though not as much a problem in a garden setting as it is easy to chop out the first year. Otherwise, prevent seed production and it will quickly disappear.