Hi @Misha - there is currently an IATI group working on how to adjust how SDG data fits into the standard (@aparr @WendyThomas would be the people to contact) and so it would be great to hear if you have found anything so far?
I think I asked before and it is not available in D-portal - and this might be linked to the fact that the SDG codes are a third party list and so a core part of the IATI standard/hard for automated systems to use.
As far as I know, SDGs are currently available as part of the sector and the results elements - but I think very few publishers are actually using it - I could only find NLRC using it at as part of their results reporting and ICCO using it as part of their sector reporting - maybe someone else can point out that there is loads I am missing?
Otherwise, any tools would be relying on mapping other types of sector codings to SDGs but that is a lot of work and often not accurate so seems unlikely.
Sorry that is not an answer that gives you what you need - I would be very interested to see what you find as this is going to be a huge use case for many data users going forward and IATI needs to meet it.