Feature summary
By chance, I discovered the free fonts IBM Plex Sans (https://fonts.google.com/?query=ibm+plex+sans) and Radio Canada Light (https://fonts.google.com/?query=radio+Canada) to be very close (though not perfect metric matches) for the proprietary Tahoma font. I would like to see both fonts installed for .svg rendering, with one of them identified as the fallback for Tahoma.
Benefits
Both fonts closely approximate Tahoma (at least within Latin alphabet), and both fonts provide a proportional sans serif option without ambiguity between I and l. IBM Plex Sans has the benefit of including more alphabets, while Radio Canada has the benefit of including the Canadian Aboriginal alphabet (which is not broadly supported through other fonts). These fonts would support rendering of svg that contain the Tahoma font, and they would add more options for developers looking for a clear and unambiguous font to use for within graphics labels.