The short answer is avoid all of them! But nowadays "telehealth platform" which is probably not the right term, could mean a lot of different things since there are many different models and some might be reasonable whereas others are extremely predatory. There are actual platforms, then there are companies which are basically large group practices like Talkiatry, then there are the MSOs like Headway and Alma, then there are the EAP like companies such as Spring Health and Modern Health, then there are the insurance based therapy forward companies like Grow, Rula, and Sondermind (latter no longer hiring), then there are pill mills like Cerebral and Done, then there are traditional platforms like MDLive, Amwell, Teladoc, Included Health, then there are the b2b companies than contract with hospitals/clinics/corrections like Iris, Orbit, Array BC. These are all different. Some are quite flexible, others are full time, some W2, some you have to find your own pts, some want you supervising NPs etc.
You can find decent gigs out there, but they may be more sporadic and hard to get. May also depend on your licenses, qualification, specialty etc. I contract with 4 different companies, and the pay varies from 550-750+/hr. Only one of these offers a traditional telehealth but they won't pay anywhere near that for telehealth, I do that for 2nd opinion chart reviews which I get only 2 a month on average (which is perfect for me). One company was offering 200/hr and I negotiated 3x that much. That is going to be very rare though - I've been ghosted by many companies who weren't willing to negotiate rates even though I will take lower paying gigs if it is interesting or low stress.
Also, LinkedIn is definitely going down hill but I have found some decent things on there. You have to wade through a lot of detritus tho.