Is this any different from https://mods.factorio.com/mod/LTN_Combinator_Fix ?

If you plan to continue development that's great, but just re-publishing a totally cloned mod isn't necessary if someone else has already done it.

Look into the "source code" link to https://github.com/maartenpeels/LTN-Helper --- it will tell you of all changes made,
Look into the Changelog of LCF (LTN Combinator Fix) and LH (LTN Helper), and you will find that LN is at 0.6.3 --- the most relevant change is
https://github.com/maartenpeels/LTN-Helper/commit/7e7a82082a4f2cba87f3ad80d89e7818cada46d4
-> "Fixed crash on load"

Which is not "just re-publishing a totally cloned mod".

Looking into the changelog, I can see that it's indeed a straight up cloned mod. When you want to fix a mod for a new gameversion you don't change the name and you don't pretend it's your mod. (edit:) Well I did miss credit is given in the description, but I still think this not a good way to go about this.

LTN Combinator for 1.0 & 0.18 (https://mods.factorio.com/mod/LTN_Combinator_Fix) , that's how it's done. That guy just didn't add his fix to the original mod's changelog.