Hey @Madigan Tumilowicz Congrats on your decision to invest out of state, been convincing my parents for the longest time and they finally trust me enough to start looking at Tennessee themselves! There's a few great markets in TN, I specifically am a fan of Knoxville and Chattanooga for their appreciating and cash flowing markets.
The median price point in both markets still hovers around 200K-250K and there's huge growth in both markets for similar economic reasons. I would say you could still achieve both long term rentals, BRRRR's and purchase some high producing vacation rentals in both markets. One thing we've noticed as out of state investors is although there is a lot of attributes to both markets growth such as the college, tech industry, large international plants (like coca-cola and volkswagen) and then there's the tourism part to it for the nature activities, you have to be very specific as to which neighborhood you are investing in as the demographic and income level can vary significantly just street by street (school systems and education seems to be the dividing factor). Although we have mainly been working in the Chattanooga market I do have some insight as to the growing areas in Knoxville and seeing as you already have resources there and it may be easier for you to take a look into.
The counties I would look at are, Anderson County, Blount County, Knox County (City of Knoxville isn't particular in permits but County of Knoxville can be very difficult for permits) and Sevier County. Take a look at West Knoxville and Farragut (however higher prices, better returns and great school system), Maryville and Oakridge (Oak Ridge is home to two large government plants that employ over 10,000 people (Oak Ridge National Laboratory and Y-12 National Security Complex) but be careful with with city taxes there. There are little neighborhoods close to Downtown Knox that are "up and coming", however they are rougher areas but you can typically buy a little lower and still see a good return there. The city of Maryville and Alcoa seem to be booming and growing but be careful with certain parts of Alcoa. Lenoir City offers cheap property taxes, a lake, and quick access to Knoxville. Kingston offers a lake as well and "country" style living but with quick access to Knoxville as well. We had some leads in Louisville and Lafollete by the lake and those seem like great areas with high ARV's and good potential for VRBO's. Hamblen County and Jefferson County are seeing a lot of job growth over the next several years
A resource I like to refer to is the Knoxville Planning site https://knoxmpc.org/ as it's pretty informative and you can stay updated on the new plans and developments. It would be great if you could even get on an email blast that gets sent out with updates. For chattanooga I subscribed to timesfreepress.com and for the most part been I've able to stay up to date on the latest developments in Hamilton County and surrounding areas (super helpful on keying into upcoming markets).
Always happy to chat further as well! Hope that helps a bit! Best of luck to you!