Old style bl is soo ajsjsjeuuehsh (╯°Д °)╯╧╧ please give me old bl with cool ar...

Everything by this mangaka-
https://www.mangago.zone/read-manga/my_life_with_you/

You can't really escape the old-fashionedness, but these are some older BLs with (what I consider) beautiful art styles. You should also check out other works from the same author, if something looks interesting to you.

'90s
https://www.mangago.zone/read-manga/new_york_new_york/ (there are official chapters posted in better quality)
https://www.mangago.zone/read-manga/fake/
https://www.mangago.zone/read-manga/yatteraneeze/

'00s
https://www.mangago.zone/read-manga/doukyuusei_nakamura_asumiko/
https://www.mangago.zone/read-manga/golden_days/
https://www.mangago.zone/read-manga/acid_town/
https://www.mangago.zone/read-manga/hana_wa_saku_ka/ https://www.mangago.zone/read-manga/aiso_tsukashi/
https://www.mangago.zone/read-manga/doushiyoumo_nai_keredo/
https://www.mangago.zone/read-manga/sono_te_no_netsu_wo_kasanete/

'10s but pre-2015
https://www.mangago.zone/read-manga/monster_petite_panic/
https://www.mangago.zone/read-manga/umibe_no_etranger/
https://www.mangago.zone/read-manga/saezuru_tori_wa_habatakanai/
https://www.mangago.zone/read-manga/canis/
https://www.mangago.zone/read-manga/blue_sky_complex/
https://www.mangago.zone/read-manga/hidamari_ga_kikoeru/

Good golly,, thank youu ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄