I shall assist with the first mod, Puff's Electrical Parts Recipe. It is possible some changes may carry over to others.
There are a lot of regular supporters in this area who will certainly assist.
1. Change the ModInfo.xml from
<Name value="Electrical Parts" />
to
<Name value="Electrical_Parts" />
since spaces are not accepted in that value, and it will not be able to load.
2. Consider using:
<configs>
<!-- Append Electrical Parts to end of recipes -->
<append xpath="/recipes">
<recipe name="resourceElectricParts" count="1" craft_time="10">
<ingredient name="resourceWood" count="50"/>
<ingredient name="resourceScrapBrass" count="5"/>
<ingredient name="resourceScrapPolymers" count="20"/>
</recipe>
<recipe name="resourceElectricParts" count="1" craft_time="10" craft_area="workbench" tags="workbenchCrafting">
<ingredient name="resourceWood" count="20"/>
<ingredient name="resourceScrapBrass" count="10"/>
<ingredient name="resourceScrapPolymers" count="10"/>
</recipe>
<recipe name="resourceElectricParts" count="1" craft_time="10" craft_area="chemistryStation" tags="chemStationCrafting">
<ingredient name="resourceWood" count="10"/>
<ingredient name="resourceScrapBrass" count="5"/>
<ingredient name="resourceScrapPolymers" count="5"/>
</recipe>
</append>
</configs>
Changes include.
a) resourceElectricalParts does not exist. It is localized as Electrical but the item name is resourceElectricParts.
b) Inventory is removed. Does that even exist as a recognisable class for craft_area? Items which craft in the Backpack and Workbench do not have a craft area for default items.
c) The craft area is chemistryStation and not chemistrystation with the lower case s in station. Case sensitivity is a thing.
3. Consider adding an items.xml entry with:
<configs>
<append xpath="/items/item[@name='resourceElectricParts']/property[@name='Group']/@value">,Chemicals</append>
</configs>
The Electric Parts are grouped with Resources and will appear in the Backpack and Workbench Resources tab area. It will not appear on the Chemistry Station unless manually searched for. Adding the Chemicals group will allow it to appear in the list with other items in that tab menu.
Issues
Since there is a separate recipe for the Backpack, which appears in the Backpack and carries over to the Workbench by default, it will appear twice on the Workbench. The first recipe is the lower resource count. I am unfamiliar with specifically setting just the Backpack as the crafting area, and others may be familiar with that if it's a thing.
Good luck with your modding.