excluding Solo Levelling some has novels and the rest are mostly just fantasy with near to none romance aspect well I hope this list helps a bit:
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http://www.mangago.zone/read-manga/hero_i_quit_a_long_time_ago/
http://www.mangago.zone/read-manga/isekai_kenkokuki/
http://www.mangago.zone/read-manga/tensei_kenja_no_isekai_raifu_daini_no_shokugyo_wo_ete_sekai_saikyou_ni_narimashita/
http://www.mangago.zone/read-manga/kumo_desu_ga_nani_ka/
http://www.mangago.zone/read-manga/tensei_ouji_wa_daraketai/
http://www.mangago.zone/read-manga/sozai_saishuka_no_isekai_ryokouki/
http://www.mangago.zone/read-manga/tales_of_demons_and_gods/
http://www.mangago.zone/read-manga/seijo_no_maryoku_wa_bannou_desu/
http://www.mangago.zone/read-manga/athena_complex/
http://www.mangago.zone/read-manga/the_new_gate/
http://www.mangago.zone/read-manga/lv999_no_murabito/
http://www.mangago.zone/read-manga/konjiki_no_word_master_yuusha_yonin_ni_makikomareta_unique_cheat/
http://www.mangago.zone/read-manga/tondemo_skill_de_isekai_hourou_meshi/
http://www.mangago.zone/read-manga/assassin_de_aru_ore_no_sutetasu_ga_yuusha_yori_mo_akiraka_ni_tsuyoi_nodaga/
http://www.mangago.zone/read-manga/the_beginning_after_the_end/?av=1
http://www.mangago.zone/read-manga/isekai_de_kuro_no_iyashi_te_tte_yobarete_imasu/
http://www.mangago.zone/read-manga/the_legendary_moonlight_sculptor/
http://www.mangago.zone/read-manga/black_haze/
http://www.mangago.zone/read-manga/shunkan_lyle/
here's another :v
novel: https://www.novelupdates.com/series/second-life-ranker/
manga: http://www.mangago.zone/read-manga/ranker_who_lives_a_second_time/
Could someone please give me some recommendation of fantasy mangas which adapted from Novel? It would be great if there are less romance aspect in the story line.
Some mangas that I've read :
Solo Leveling, Tensei Shitara Slime Datta Ken, Isekai Yururi Kikou.
Thanks in advance.