Lots of Creating, Building, Cultivating in Fantasy/Isekai

Protagonist who involves in crafting, forging, blacksmithing, constructing, farming, alchemy. Also Support Class tag.

Healer/Medicine in Fantasy/Isekai
here

Country Building/Conquest/Seige in fantasy/isekai
here
Isekai-Fantasy/Dungeons dragged into the Modern World
here

Additional (currently no MyAnimeList page):
-(Manga/2023) Potion Kouji ni Sasensareta Ore Renkinjutsushi, Bishoujo ni Rachisare Ikoku de Itsunomanika Eiyuu ni naru / I, Who Was Demoted to a Potion Factory, Was Kidnapped by an Elf and Became an Alchemist in a Desert Country
-(Manga/2023) Tensei Renkin Shoujo no Slow Life / Reincarnated Alchemy Girl's Slow Life

Additional:
51-
A 'Part 2' will be created if this list goes up to 60.