this is how I configured it, and the tabs show in order of the view list:
views:
- !include /config/lovelace/views/view_Home.yaml
- !include /config/lovelace/views/view_Lights.yaml
- !include /config/lovelace/views/view_Ikea_tradfri.yaml
- !include /config/lovelace/views/view_Philips_hue.yaml
- !include /config/lovelace/views/view_Floorplan.yaml
- !include /config/lovelace/views/view_Settings.yaml
- !include /config/lovelace/views/view_Home_climate.yaml
- !include /config/lovelace/views/view_Home_summary.yaml
- !include /config/lovelace/views/view_Summary_groups.yaml
- !include /config/lovelace/views/view_Home_assistant.yaml
- !include /config/lovelace/views/view_Home_energy.yaml
- !include /config/lovelace/views/view_Home_solar_energy.yaml
- !include /config/lovelace/views/view_Phones_tablets.yaml
- !include /config/lovelace/views/view_Travel.yaml
- !include /config/lovelace/views/view_Weer_klimaat.yaml
- !include /config/lovelace/views/view_Tijd_agenda.yaml
- !include /config/lovelace/views/view_Computer_netwerk.yaml
- !include /config/lovelace/views/view_Audio_video_gaming.yaml
- !include /config/lovelace/views/view_Media_players.yaml
- !include /config/lovelace/views/view_Health.yaml
- !include /config/lovelace/views/view_Home_automation.yaml
- !include /config/lovelace/views/view_Weblinks.yaml
- !include /config/lovelace/views/view_Leftovers.yaml
- !include /config/lovelace/views/view_Developer.yaml
- !include /config/lovelace/views/view_Test.yaml