what are some equivalent nikon lenses to canon L series lenses. im looking for something like
Wide angle: Canon 16-35mm
Standard Angle: Canon 24-70mm
Telephoto: Canon 70-200mm
First of all, with very, very few exceptions, for each Canon lens, there is an equivalent Nikkor. Unless you are interested in something very particular (loupe macro lenses or Nikon's DC lenses), all lenses have an equivalent. Judging from your list, you are only interested in standard focal length ranges which is covered not only by Nikon and Canon, but by all dslr manufacturers. Although Nikon doesn't have something similar to the `L badge', the price tag will unambiguously tell you what kind of lens it is.
Regarding your list:
Wide-angle zoom: 14-24 mm f/2.8 or 17-35 mm f/2.8
Standard zoom: 24-70 mm f/2.8
Standard tele zoom: 70-200 mm f/2.8 or 80-200 mm f/2.8
No matter if you go for Nikon or Canon, this is several thousand Euros/Dollars in glass, are you sure this is practically relevant for you at this stage?
Also, these lenses are not going to be optimal if you have a crop camera. These lenses are meant for full-frame cameras (which add 3k+ in your favorite currency to the tab).
Unless you know that you will have this type of money in the foreseeable future, you should look into a different lens line-up (which, again, is catered by all lens manufacturers). Unlike Canon, Nikon also has pro-grade glass for crop sensors (professional Canons are either full-frame or `almost full-frame' by their definition and their crop glass is officially not L). E. g. Nikon's 17-55 mm f/2.8 is a pro lens.
Regarding `larger diameter lenses', the lenses are not larger in diameter, the
lens mount is. In case of Nikon, the point is pretty much moot, you can still use lenses from the 50s with some bodies and all AI lenses will work (in manual, but they will work).
In any case, with the cameras on your list, you should look into different focal length ranges (again, independent of manufacturer):
wide-angle zoom: 10-22/12-24 mm. Don't just look into Canon and Nikon, Tokina, for example, makes an excellent 11-16 mm f/2.8 zoom
standard zoom: 16-55 f/2.8 (Canon makes a non-L lens which is optically very good, but made of high-quality plastic; Nikon makes a lens with pro-grade built quality as well; you should definitely have a look at Tokina's 16-50 or Tamron's 17-50 f/2.8 which is optically very good as well, especially considering the price).
tele zoom: both manufacturers disappoint here, there are only third-party offers that cover 50-150 mm f/2.8
I know that you wrote you would like to switch to full frame, but switching to full-frame will be a
major investment. There is no use getting a full-frame camera and paired with a cheap lens. You will benefit a lot more from quality glass and a crop body than the other way around.