There are two reasons that the 24-70 F2.8 and 70-200 F2.8 IS zoom are the two most used and recommended wedding lenses:
1) zoom range covers everything needed
2) for the most part, F2.8 is the widest Aperture that will get most things in focus
the 35/85/135 crowd would argue
- the above combos create boring pictures (tiniest bit of truth but a good photog is still a good photog)
- the above combo is not fast enough for dark receptions (true - except if you have good off camera lighting)
the 24-70, 70-200 crowd would argue
- the 35/85 miss potential pictures zooming with their feet
- are too focused on 'perfect' pictures
- are obsessed with thin depth of field
the reality is that an experienced Pro can shoot a wedding on anything and an inexperienced amateur will struggle with the 'perfect' setup
if you asked 'most' experienced Canon wedding shooters the one camera, the one lens and the one flash they would take to shoot a wedding, they would answer:
- 5D4 (plus spare battery) + Canon 24-70 F2.8 + 600EX-rt (plus battery pack for bounced flash)
After the above setup, everything is a bonus and also an artistic choice (with the exception of lighting - great lighting can't be replicated with any lens or camera)
If I was a starting wedding photog, I would buy lenses in this order:
1) 24-70 F2.8
2) 70-200 F2.8 IS
3) Fast 50 (or close focus Tamron 45mm type lens)
5) Fast 35
6) Fast 85
If you live in a very scenic area or shoot massive wedding parties, then #3 should be a 17-40 / 16-35. I'm not personally a big fan of this type of lens for weddings because of the potential for distortion, but I have seen it used very well by photogs who use it a lot but I personally would avoid it unless you are very good at 'using' it with 'people' as your target or you need it because of the venue.
My runner-up type of lens for indoor dance / receptions is a Fast 28mm - in my opinion, it is the perfect FL / DoF type tradeoff if shot at F1.8 - F2.
Hockey and wedding photographer. Favourite camera / lens combos: a 1DX II with a Tamron 45 1.8 VC, an A7Rii with a Canon 24-70F2.8L II, and a 5DSR with a Tamron 85 1.8 VC. Every lens I own I strongly recommend [Canon (35Lii, 100L Macro, 24-70F2.8ii, 70-200F2.8ii, 100-400Lii), Tamron (45 1.8, 85 1.8), Sigma 24-105]. If there are better lenses out there let me know because I haven't found them.