The Type 1 Helvetica fonts that form four of the typefaces of the “base 13” fonts of Adobe PostScript are no longer licensed directly by Adobe to end users, for better or for worse!
Also note that the TrueType Helvetica typefaces that are bundled with MacOS are not the same fonts that were distributed by Adobe or that were printer-resident in Adobe PostScript-based printers/RIPs. Although you could conceivably “convert” such a MacOS-format TrueType font to a Windows-based TrueType font with the appropriate conversion utility software, in fact, such conversions may not be legal under the MacOS license agreement. Those fonts are not public domain or “free” in any manner.
The OpenType Helvetica LT Std font family, part of the Adobe Font Library, available either as part of the Adobe Font Folio product than can be licensed directly from Adobe or available from other foundries indeed has the same design and metrics as the original Helvetica family shipped by Adobe with PostScript printers. You mention that you “cannot” use that version? Perhaps you might explain what the issues you have are, other than the full font name.
However, the easiest and least expensive way to obtain the fonts that are resident in Adobe PostScript-based printers / RIPs is to simply install the host-based fonts provided by the manufacturer of those printers. Part of the Adobe PostScript license provided to our OEMs provides these OEMs (such as Xerox, Ricoh, etc.) to distribute those fonts on their host software / drivers software distribution. Thus, if you have a printer with actual Adobe PostScript, you should look for the CD/DVD that came with that device and find the installer for that software. Or if you no longer have that software but do have such devices, contact the manufacturer's support organization and try to get a copy of the software. That would solve your problem directly.
All this having been said, you should be aware that although Microsoft still continues to support installation of the older Type 1 fonts and Adobe graphic arts software (including Acrobat) continues to support Type 1 fonts even under Windows 10, you should be aware that the last two versions of Microsoft Office (2013 and 2016) and the newest Microsoft V4 printer drivers no longer provide any support for Type 1 fonts. The same is true for applications from other vendors. Migration to OpenType is most strongly recommended!!
- Dov