I would only consider the 2020 10.9 inch screen, iPad Air 4 ( IF budget and finances are are priority consideration ) OR the newest 2021, 11 inch screen iPad Pro.
Both of these models will be HUGE improvements over your 5-year old, 2016 9.7 inch screen iPad Pro.
The 11 inch screen iPad Pro, feature-wise, will be improvement parity to your older iPad Pro.
The 2020 iPad Air 4 ONLY has some of the more current model iPad Pro features but NOT all.
The 2020 iPad Air 4 uses the newer USB-C connection, instead of Apple's proprietary Lightning port connection.
The 2020 iPad Air 4 uses the 2nd gen Pencil and will NOT work with the 1st gen Pencil.
The 2020 iPad Air only has true two stereo speakers, instead of 4 speakers.
You'll get an A14 CPU ( Your current iPad Pro has an A9X ).
You'll get 4 GBs of internal processing RAM ( your current iPad only has 2 GBs of internal RAM ).
Liquid Retina display
Wide color gamut display (P3)
True Tone display
Fingerprint-resistant oleophobic coating
Antireflective screen coating
Touch ID
Rear camera system
12MP Wide camera
ƒ/1.8 aperture
Five-element lens
IR filter
Backside illumination sensor
Live Photos with stabilization
Autofocus
Tap to focus
Wide color capture for photos and Live Photos
Panorama (up to 63MP)
Exposure control
Noise reduction
Smart HDR for photos
image stabilization
Burst mode
Timer mode
Photo geotagging
Image formats captured: HEIF ( High Efficiency Image Format ) and JPEG
Front facing camera system
7MP photos
ƒ/2.2 aperture
1080p. HD video recording at 60 fps
Wide color capture for photos and Live Photos
Smart HDR
Retina Flash
Backside illumination sensor
Auto image stabilization
Burst mode
Exposure control
Timer model
The current 2021, 11 inch screen iPad Pro has Apple's evolutionary MI ( in reality next gen A14Z ) CPU.
8 or 16 GBs of internal processing RAM.
Liquid Retina display
Wide color gamut display (P3)
True Tone display
Fingerprint-resistant oleophobic coating
Antireflective screen coating
120 Hz Apple “ProMotion” screen refresh rate
2nd gen Pencil support
4 speaker audio system.
USB-C AND Thunderbolt connection protocols
Pro camera system:
Wide and Ultra Wide cameras
Wide: 12MP, ƒ/1.8 apertur
Ultra Wide: 10MP, ƒ/2.4 aperture, and 125° field of view
2x optical zoom out
Digital zoom up to 5x
Five‑element lens (Wide and Ultra Wide)
Brighter True Tone flash
Panorama (up to 63MP)
Sapphire crystal lens cover
Autofocus with Focus Pixels (Wide)
Smart HDR 3
Wide color capture for photos and Live Photos
Lens correction (Ultra Wide)
Advanced red-eye correction
Photo geotagging
Auto image stabilization
Burst mode
Image formats captured: HEIF and JPEG
True depth front facing FaceID camera system
12MP Ultra Wide camera
Portrait mode with advanced bokeh ( background blurring ) and Depth Controls
Portrait Lighting with six lighting effects
Animoji and Memoji
FaceTime Center stage feature
Smart HDR
1080p HD video recording at 25 fps, 30 fps, or 60 fps
Time‑lapse video with stabilization
EDR ( Extended Dynamic Range ) for video up to 30 fps
Cinematic video stabilization (1080p and 720p)
Wide color capture for photos and Live Photos
Lens correction
Retina Flash
Auto image stabilization
Burst mode
That should cover just about everything on these two iPad models.
Get the most internal data storage amount you can afford as NO Apple iOS/iPadOS devices have expandable internal data storage.
Best of Luck to You!
