Something that's like solo leveling/beginning after the end/study group? I've look through...

http://www.mangago.me/home/mangalist/626481/
i update it daily!

Weak Hero

:O you're doing the gods work.

Fantasy Action with Strong Male Lead ~ for solo levelling and beginning after the end
http://www.mangago.me/read-manga/ranker_who_lives_a_second_time/
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http://www.mangago.me/read-manga/tomb_raider_king/?lDMs
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http://www.mangago.me/read-manga/the_legendary_moonlight_sculptor/?stNd
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http://www.mangago.me/read-manga/the_second_coming_of_gluttony/?fStW
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http://www.mangago.me/read-manga/kill_the_hero/
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http://www.mangago.me/read-manga/the_descent_of_the_demonic_master/?ekgX
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http://www.mangago.me/read-manga/reverse_villain/
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http://www.mangago.me/read-manga/a_returner_s_magic_should_be_special/?4a3Z
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http://www.mangago.me/read-manga/otherworldly_sword_king_s_survival_records/
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http://www.mangago.me/read-manga/i_m_destined_for_greatness/

School Life action with strong male lead ~ for study group
http://www.mangago.me/read-manga/lookism/ - also available on WEBTOONS were you can legally read it and support the author!
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http://www.mangago.me/read-manga/the_world_is_money_and_power/
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http://www.mangago.me/read-manga/boss_in_school/
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http://www.mangago.me/read-manga/the_boxer/
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http://www.mangago.me/read-manga/weak_hero/ -also available on WEBTOONS were you can legally read it and support the author!
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That is all I can recall currently

Try Eleceed! I really love all the webtoons you listed too (except study group cus I havent read it yet). I think you'll also like it

oh no- I forgot that one! Yes, I support this reccommendation as well!

Bug Player

The Scholar's Reincarnation

Omniscient Reader’s Viewpoint

Mission: Yozakura Family

A Returner's Magic Should Be Special
Second Life Ranker

Crimson Karma

I am the Sorcerer King
Master of Gu

Tensei Shitara Slime Datta Ken

who said im not god

Kami sama, It was mistaken forgive me.

Lmaooo already follow your list. It’s that good