Because you have a GS cage derailleur--this is Shimano's medium cage length but the largest available on road rear derailleurs--you can be assured of the system having enough chain wrap capability to handle the 52/36 chainrings paired with an 11-34 cassette. Chain wrap is the ability of the rear derailleur to take up the chain slack between the amount of chain needed to wrap around the 52t front and 34t large cassette sprocket versus the chain required to go around the 36t front and 11t rear.* The slack must be taken up by the sprung derailleur cage and this capacity is directly related to the cage length. The "total capacity" of a derailleur is a function of the cage length. The Tiagra GS cage has a TC of 41t, and you'll be dealing with a max TC of 39t depending on the cassette choice.
I see in the comments your commute is mostly flat. The 52/36 front makes for some big gearing ratios. This is why the sub-compact, 50/34 or even smaller large chain wheels with tooth counts in the high 40's have become more popular. Us mere mortals are a market force. Anyway, some factors in the choice of cassette include frequency of the need for a lower gear, such as a hilly route or gravel section. The balancing factor to a wide range cassette is the closer gearing steps of a narrower range cassette. Note that on an 11-28 cassette the gearing goes up by a single tooth count in the 5 highest gears, then the spread is two teeth at the low end. This narrower range allows better fine tuning of your gearing allowing for a consistent, efficient cadence.
Regarding wheel selection, your requirements are 700c (622-19 is a standard sizing for a 700c road wheel. The "19," a measure of the inside diameter of the rim can be different within a range, say 18-21, and still fit a common, 622-32 road tire which is what the Escape 2 came stock with. After size, you'll need your choice to be rim brake compatible. Sometimes "machined sidewall" will be a phrase used. Hub consideration is next. it appears the Escape 2 used a standard 10mm QR axle. The other option is that your frame requires a 12mm through axle which will require that standard of your hub.
*An experienced cyclist will for the most part not find themselves in either of these gear combinations. This causes a extreme cross chaining to occur in the drivetrain which saps watts, induces extra wear into the drivetrain components, and is foolish in the sense that an identical or even more favorable gear ratio can be found using the other chainring in combination with a different cassette cog. The result will be a quieter, more efficient chain line in a system that's going to last longer.
