Easiest Warframe to use on mobile?

To be clear first off, I am a PC player, but I have the game installed on mobile just to access foundry, check inventory, etc. on the go because the companion app has been slow and clunky in my experience.

However, was considering the prospect of if I’m ever on the go and want to just crack some relics, farm resources, rank up some gear, any other low level brain off content.

Obviously the mobile controls are jank as hell and a frame like Titania for example would be genuinely unplayable. What frames do you guys think would be easiest to slap on for iOS Warframe just to crank out some easy missions without completely throwing?

edit: WITHOUT buying a phone controller attachment I’m not spending $40-100 so I can look like a dumbass just to pop some relics on my commute. Idc if people know I’m playing a game on my phone, I just don’t wanna be the guy who whips a controller out of his backpack in public