If we look at both 1928 and 1929 Chinese MA tournaments, there were no Bagua fighters in those lists (There were no Taiji fighters in those lists either).
1928 National Guo Shu fighting Competitiion
朱国福(上海 形意)、 Xing Yi
王云鹏(河南 少林)、Shaolin
张长义(上海 形意)、Xing Yi
马裕甫(山东 查拳)、Long Fist (Cha Quan)
张英振(山东 查拳)、Long fist (Cha Quan)
窦来庚(山东 太乙门)、Tai Yi Men
杨法武(山东 摔跤、查拳)、Long fist (Cha Quan) Shuai jiao
杨士文(山东 迷踪拳)、Long fist (Mi Zong)
顾汝章(江苏 少林)、Shaolin
王成章(上海 洪拳) 、Hong quan (not sure if northern or southern
朱国桢(河北 形意)、Xing Yi
张维通(山西 六合拳)、Xing yi liu he Quan
朱国禄(河北 形意)、Xing Yi
马承智(安徽 少林)、Shaolin
胡炯(江西 字门拳)。Zi Men Quan (This is the only southern style)
1929 Hangzhou Leitai Tournament
1. Wang Ziqing (skilled at shaolin & shuai jiao)
2. Zhu Guolu (xingyi and boxing)
3. Zhang Dianqing (fanzi quan, shuai jiao, yiquan)
4. Cao Yanhai (originally studied Mizong quan. Learnt Tongbei from Ma Yingtu, pigua from Guo Changsheng, later studied under Sun Lutang)
5. Hu Fengshan (originally studied xingyi under Tang Shilin., later became Sun Lutang’s disciple)
6. Ma Chengzhi (originally shaolin,later studied xingyi under Sun Lutang)
7. Han Qingtang (praying mantis, taizu long fist, especially expert at qin’na)
8. Wan Changsheng (learnt Cha quan from Ma Jinbiao)
9. Zhu Zhenglin (learnt Tai Yi Men under Yang Mingzhai)
10. Zhang Xiaocai (learnt Cha Quan under Ma Jinbiao)
11. Gao Zuolin
12. Yue Xia (bagua under Zhao Weixian)
13. Zhao Daoxin (yiquan)
14. Li Qinglan
15. Shang Zhenshan
1933 National Nanking Guo Shu Competitiion
Don't have name list for this.