A couple of questions

[piercer]

In the PARAM.SFO file

Does anybody know what the 16 bytes after the plain text file name are?

Does anybody know what the 32 bytes that start at 11C0 are?

These are in all the 5K PARAM.SFO files I have looked at.

[Guest]

For most games, the name starts at 11a0 in param.sfo and 0x80 bytes are allocated for it, even though not all are used. So if your param.sfo is following the same pattern, the location you describe falls within that range as "allocated" but "unused" - in other words, it is likely garbage.

[pdc]

Looking at the Lumines SFO file...

In the PARAM.SFO file

Does anybody know what the 16 bytes after the plain text file name are?

Yes - the SFO header.
Edit: Unless you are talking about the "DATA.BIN" text in the SFO file, in which case see my next point about this being only part of some binary data.

Does anybody know what the 32 bytes that start at 11C0 are?

The 32B at 11C0 is only part of a data value.

The SAVEDATA_PARAMS value begins at 11B0 and is 128 bytes long.
This is binary data.